Season 1Edit

Picture Title Episode # Writer Episode #
OC-101 Premiere 1.01 Josh Schwartz August 5, 2003
After Ryan just escapes jail time and is kicked out by his mother, his attorney, Sandy Cohen, brings him home, to the dismay of his wife, Kirsten. Ryan meets their son, Seth, and other Newport teenagers, who lead him to trouble, making Kirsten think again about letting Ryan stay in their home.
OC-102 The Model Home 1.02 Allan Heinberg
Josh Schwartz
August 12, 2003
Marissa and Seth convince Ryan not to leave Newport, and hide him in one of Kirsten's vacant model homes. When Luke confronts Ryan about his relationship with Marissa, their fight ends up setting the model home on fire, getting them both arrested.
Thegamblepic The Gamble 1.03 Allan Heinberg
Josh Schwartz
August 19, 2003
Sandy comes to Ryan's rescue once again. Kirsten decides to invite Dawn to an elite Casino Night, but her drinking gets out of control, disappointing Ryan. Dawn believes Ryan is better off with the Cohens, leaving him with Sandy and Kirsten.
OC-104 The Debut 1.04 Allan Heinberg
Josh Schwartz
August 26, 2003
Now that Ryan is staying with the Cohens, he must attend the Cotillion Ball, where Newport's finest young ladies enter society. Luke's jealousy results in Ryan escorting Marissa. Jimmy becomes a suspect of a fraud investigation and Holly's dad decides to confront him at the Ball in front of everyone.
OC-105 The Outsider 1.05 Jesús Salvador Treviño September 2, 2003
Ryan gets a job and meets Donnie, a Newport teen from Corona. Seth decides to invite Donnie to Holly's beach party, but his attendance brings Luke to the hospital.
Thegirlfriendpic The Girlfriend 1.06 Steven Robman September 9, 2003
Kirsten's father, Caleb Nichol, comes to town with his new 24 year-old girlfriend, Gabrielle. Marissa isn't ready to pick between Luke and Ryan, but when she walks in on Ryan with Gabrielle, she chooses Luke. Summer's feelings for Seth begin to show. Julie tells Jimmy she wants a divorce.
Theescape The Escape 1.07 Steven Robman September 16, 2003
Marissa doesn't take her parents' divorce well, and when she finds Luke with Holly in Tijuana, she's found passed out in an alley. Kirsten, upset that Sandy is considering the job, finds herself in a compromising position with Jimmy in his new apartment.
Therescue The Rescue 1.08 Josh Schwartz October 29, 2003
Julie blames Ryan for Marissa's incident and tells him to stay away. Sandy starts his new job, and Kirsten is displeased with his new coworker, Rachel. Ryan must take a placement test to determine his enrollment at Harbor. Julie tries to get Marissa to see a therapist in San Diego, contrary to what Jimmy and Marissa want.
Theheights The Heights 1.09 Josh Schwartz November 5, 2003
Ryan doesn't feel like he belongs at Harbor and Luke doesn't help his situation. Summer keeps her friendship with Seth private, but is jealous of his relationship with Anna. Sandy accepts a case against Caleb at his new job, that will test his relationship with Kirsten.
Theperfectcouple The Perfect Couple 1.10 Josh Schwartz November 12, 2003
Kirsten becomes worried about Sandy's professional relationship with Rachel. Ryan spots Caleb and Julie together, and becomes responsible for Marissa outing their private relationship at a charity event. Summer tells Seth how she feels.
Thehomecoming The Homecoming 1.11 Josh Schwartz November 19, 2003
Ryan and Marissa go to Chino to visit Trey for Thanksgiving, but he asks Ryan for a favor. Seth must choose between Anna and Summer. Kirsten and Sandy make an attempt to set up Jimmy and Rachel.
Thesecret The Secret 1.12 Josh Schwartz November 26, 2003
Ryan's trust is put to the test when he and Luke spot Carson with another man. Seth struggles to reconcile with Anna and Summer. Caleb and Julie agree to separate for a while. Jimmy and Sandy go into business together.
Thebestchhrismukkahever The Best Chrismukkah Ever 1.13 Josh Schwartz December 3, 2003
Kirsten learns something about her father that'll help Sandy's case, but will put her job in jeopardy. Ryan's Christmas does not go as planned. Marissa meets someone in therapy. Meanwhile, Seth struggles choosing between Anna and Summer.
Thecoutdown The Countdown 1.14 Josh Schwartz December 17, 2003
Kirsten's sister, Hailey, crashes at the Cohen's home and throws a New Year's Eve party that gets out of control. Ryan is worried about Marissa's relationship with Oliver. Anna decides to spend her night with Seth, without Summer's knowledge.
Thethirdwheel The Third Wheel 1.15 Josh Schwartz January 7, 2004
Hailey realizes she is no longer welcome at the Cohen residence. Oliver invites the gang to a Rooney concert, but Ryan catches him in a drug deal in the parking lot. Seth has difficulties telling Summer about his relationship with Anna.
Thelinks The Links 1.16 Josh Schwartz January 7, 2004
Oliver's friendship with Marissa strains her relationship with Ryan. Summer becomes jealous of Seth and Anna's relationship. Meanwhile, Hailey and Kirsten clash when Kirsten convinces Caleb to cut her off.
Therivals The Rivals 1.17 Josh Schwartz January 21, 2004
Oliver transfers to Harbor, while Ryan risks his academic future to expose him. Seth becomes jealous of Summer's relationship with Danny, forcing him to doubt his relationship with Anna. Meanwhile, Jimmy and Sandy go into business together. Also, Kirsten gets worried about the company when Caleb hires Julie as an interior designer.
Thetruth The Truth 1.18 Josh Schwartz February 11, 2004
Luke starts to see Oliver's true colors after he gets Ryan suspended, but Marissa won't see it. Anna confronts Seth about his relationship with Summer. Meanwhile, Caleb gets Kirsten to break up with Julie for him.
Theheartbreak The Heartbreak 1.19 Josh Schwartz February 18, 2004
Ryan and Marissa need to rebuild trust after the incident with Oliver, but it's hard when Theresa comes to town. Jimmy discovers he has a secret admirer, while Luke spends the night with Julie. Meanwhile, Seth and Sandy have "the talk".
Thetelenovela The Telenovela 1.20 Josh Schwartz February 25, 2004
Ryan realizes Theresa isn't telling him the truth on why she's staying in Newport. Summer keeps her relationship with Seth private, turning him to Anna for support. Meanwhile, Sandy finds himself in the middle of Caleb's mess. Also, Jimmy suspects something between Julie and Luke.
Thegoodbyegirl The Goodbye Girl 1.21 Josh Schwartz March 3, 2004
Seth feels guilty when Anna announces she's moving back to Pittsburgh. Legal troubles brew for Caleb and Kirsten, while Sandy works to solve them. Luke and Julie find their secret affair harder to maintain. Meanwhile, Theresa's boyfriend from Chino arrives bringing trouble.
TheLA The L.A. 1.22 Josh Schwartz March 24, 2004
Ryan, Marissa, Seth and Summer head down to L.A. and find Hailey working as a stripper. Jimmy and Sandy approach Caleb for business help. Meanwhile, Ryan tries to keep Luke and Julie's affair a secret from Marissa.
Thenana The Nana 1.23 Josh Schwartz March 31, 2004
Sandy's mother from Florida comes to Newport for a visit with a different attitude. Ryan searches for Marissa. Summer tries to impress Nana. Jimmy and Hailey take a step forward with their newfound romance.
Theproposal The Proposal 1.24 Josh Schwartz April 14, 2004
Marissa doesn't want to hear what Luke has to say, but gives him a chance after a near-fatal car accident. Meanwhile, Jimmy becomes an obstacle in getting a liquor license. Caleb proposes to Julie.
Theshower The Shower 1.25 Josh Schwartz April 21, 2004
Kirsten and Marissa throw a bridal shower for Julie, but Marissa invites Julie's unwanted estranged sister. Theresa calls Sandy for legal advice, but tries to avoid Ryan. Hailey and Jimmy continue their romance. Meanwhile, Summer is disappointed when Seth meets her father.
Thestrip The Strip 1.26 Josh Schwartz April 28, 2004
While the boys are in Las Vegas, Jimmy and Sandy learn Caleb's true motives. Hailey devises a plan in an attempt to get Caleb to break it off with Julie. Marissa spends the night with Theresa and discovers something that might affect her.
Thetiesthatbind The Ties That Bind 1.27 Josh Schwartz May 5, 2004
Caleb and Julie officially get married, and Marissa moves in with them. Ryan and Theresa face a difficult decision regarding her pregnancy. Seth makes a bold move when things around him start to fall apart.

Season 2Edit

Picture Title Episode # Writer Episode #
OC-201 The Distance 2.01 Josh Schwartz November 4, 2004
The summer is coming to an end, and Seth hasn't returned home to Newport. In the midst of home renovations, Sandy and Kirsten are strained and missing their son. Ryan has begun his new life with Theresa in Chino, as Marissa is alone and in a dark place. Summer is slowly getting over Seth.
OC-202 The Way We Were 2.02 Allan Heinberg November 11, 2004
Now that Ryan and Seth have returned to Newport, its time to get back to school. The boys reunite with their former girlfriends but it becomes apparent that things will not be going back to the way they were. Caleb's legal troubles catch up with him, and Hailey has bad news for Jimmy.
OC-203 The New Kids on the Block 2.03 Stephanie Savage November 18, 2004
Now that Ryan and Seth have returned to Newport, its time to get back to school. The boys reunite with their former girlfriends but it becomes apparent that things will not be going back to the way they were. Caleb's legal troubles catch up with him, and Hailey has bad news for Jimmy.
OC-204 The New Era 2.04 Josh Schwartz December 2, 2004
It's a new era in Newport Beach. Kirsten and Julie try and work together at The Newport Group, while Sandy tries to find out what Caleb is hiding. Seth and Ryan go on a double date with Lindsay and Alex, but it ends differently than the four of them might have expected.
OC-205 The SnO.C. 2.05 John Stephens December 9, 2004
It's the annual "SnO.C." winter dance. Seth wants to take his relationship with Alex further, but she might have other plans. Marissa's secret relationship with D.J. is exposed, while Zach continues his pursuit of a Seth-free relationship with Summer. Sandy solves Caleb's legal puzzle ending with a shocking twist.
OC-206 The Chrismukkah That Almost Wasn't 2.06 Josh Schwartz December 16, 2004
It's Chrismukkah once again in The O.C. and this year, Seth wants to take it global. As Caleb is faced with the looming prospect of going to prison, Sandy convinces him to come forward and reveal the truth about his involvement with Renee. Julie and Jimmy spend some quality time together. Caleb's confession shocks the Cohen and Nichol family to the core, and nothing will be the same again.
OC-207 The Family Ties 2.07 Josh Schwartz January 6, 2005
After Caleb's confession, The Cohens try to welcome Lindsay as part of the family. Jimmy is faced with a choice when Marissa finds out about his relationship with his ex-wife, Julie. Seth attempts to be a "bad boy" like Ryan to impress Alex. Summer finds out what Zach did on his Christmas break while Ryan and Lindsay want to know if it is too awkward for them to be together.
OC-208 The Power of Love 2.08 John Stephens January 13, 2005
When Sandy forgets his and Kirsten's 20th wedding anniversary, he finds himself going to a lot of trouble to make it up to her. Seth and Ryan's respective relationships with Alex and Lindsay add to the trouble, and doubt falls upon their futures together. Marissa and Julie continue to butt heads over DJ, and Summer wants to take her relationship with Zach to the next level.
OC-209 The Ex-Factor 2.09 Josh Schwartz January 20, 2005
When Sandy forgets his and Kirsten's 20th wedding anniversary, he finds himself going to a lot of trouble to make it up to her. Seth and Ryan's respective relationships with Alex and Lindsay add to the trouble, and doubt falls upon their futures together. Marissa and Julie continue to butt heads over DJ, and Summer wants to take her relationship with Zach to the next level.
Theaccomplice The Accomplice 2.10 Allan Heinberg January 27, 2005
Things heat up between Sandy and Kirsten when Sandy decides to help his mentor in law school find his daughter, Rebecca, whom was Sandy's first love. Seth and Zach start up a comic book based on their lives in Newport, while Summer questions why she's been left out. Ryan makes the attempt to unite Lindsay and Caleb after Lindsay tells Ryan she is curious in getting to know her "new" father. While Julie is in Paris, Marissa looks for new ways to rebel; in doing so, her friendship with Alex increases.
OC-211 The Second Chance 2.11 Josh Schwartz February 3, 2005
After hearing about Lindsay and Ryan's failed attempt at dinner with Caleb the night before, Kirsten arranges a dinner that she can supervise. But her presence makes no difference when Ryan and Caleb butt heads and disaster strikes. Sandy keeps Rebecca's presence in Newport a secret from Kirsten after deciding to take her case to court. Marissa and Alex's relationship intensifies, while Seth and Summer spend a lot of time together at Zach's insistence.
OC-212 The Lonely Hearts Club 2.12 Josh Schwartz February 10, 2005
It's Valentines Day 2005 in Orange County when Sandy and Kirsten's conflict about Rebecca continues. Ryan tries to make peace with Caleb to spend Valentines Day with Lindsay. While Seth, Zach, and Summer head to San Diego in hope to make their Comic Book idea succeed Seth has a breakdown and ends up in a lonely state. Marissa and Alex take a step forward in their relationship while Julie returns from her trip in hope to reconnect with Marissa.
OC-213 The Test 2.13 John Stephens February 17, 2005
As Sandy continues working on Rebecca's case, Kirsten questions how strong their feelings are for one another. Seth continues his downward spiral in the aftermath of Zach and Summer's Valentine's night together, while Marissa confronts her fear about her relationship with Alex. Caleb offers Lindsay a place in his family, but not without a paternity test.
OC-214 The Rainy Day Women 2.14 Josh Schwartz February 24, 2005
It's a rainy day in Newport where Lindsay decides to take the DNA test and makes a difficult choice regarding her life with Caleb while Ryan helps her through it. Sandy still wants to help Rebecca with her case and tries to convince her not to run again. Kirsten is still upset and wishes her marriage would go back to normal and for Rebecca's case to be over with. Meanwhile, Seth thinks he's lost Summer forever untill Summer is unable to hide from her feelings once and for all. Marissa moves out of the Cooper-Nichol mansion and moves in with Alex after she tells her mother about Alex being her girlfriend.
OC-115 The Mallpisode 2.15 Stephanie Savage March 10, 2005
After Lindsay moves to Chicago with her mom, Ryan is heartbroken and Caleb's confused. Seth, Summer, and Marissa invite Ryan to the mall to get his mind off things. Caleb tags along to vent when Sandy tries to make amends with Kirsten by searching for her wedding ring or even a grand gesture that will take her back to when Sandy first proposed. Meanwhile, Alex learns that Marissa might not be as into her as she thought she would be. Kirsten and Julie call an editor for Newport Living but at the same time Julie's Riverside past catches up to her.
Theblazeofglory The Blaze of Glory 2.16 Mike Kelley March 17, 2005
Spring has flung in Newport where Marissa recruits Ryan to help her with Harbor School's Pep Rally Bonfire. Alex accepts that her and Marissa are from two different lives and knows she is fighting a lost cause. Seth is stuck and misses last year's good times while Summer disagrees and tells him it's time to move on. Meanwhile, Julie still doesn't know what she is gonna do about her blackmailer and seeks some advice from Sandy. Kirsten wants Carter to stick with the magazine despite his reservations.
Thebrothersgrim The Brothers Grim 2.17 Josh Schwartz March 24, 2005
When Ryan's brother, Trey, gets out of jail and gives Ryan a call, the Cohens give him a warm welcome. Though, Ryan knows nothing good can come from it. Zach returns from his Italy trip and gives some news leaving Summer curious and Seth not really sure what to think. Meanwhile, after Julie admits her naked mistake to Kirsten, they both agree to get Caleb in on it for more help. Newport Living is officially launched.
OC-218 The Risky Business 2.18 Josh Schwartz April 7, 2005
Sandy reluctantly serves as host/auctioneer at yet another OC benefit; Trey lies to Ryan to prove that he can be self-dependent; Carter reinvigorates Seth and Zach's comic book dream, much to the annoyance of Summer. Marissa moves in with the Cohens.
OC-219 The Rager 2.19 John Stephens April 14, 2005
It's Trey's 21st birthday and Marissa, anxious to help Trey and Ryan forge a relationship, throws a birthday party for Trey at the Cooper-Nichol mansion that turns out to be a rager. Seth is left in hot water by both Summer and Zach, but why? Sandy wants to continue his friendship with Carter, leaving a confused Kirsten. Meanwhile, Julie shares some memories with an "old" friend and in the process learns a few things and gains a few ideas.
Theocconfidential The O.C. Confidential 2.20 Mike Kelley April 21, 2005
Sandy and the boys devise a plan to save Trey from going to jail after he took the fall for supplying drugs at his birthday party. Kirsten and Carter, fulfilling more than their editorial duties, take a trip to Featherbrook's winery. Meanwhile, Caleb returns home and questions his marriage with Julie.
OC-221 The Return of the Nana 2.21 Josh Schwartz May 5, 2005
Sandy, Seth and Ryan travel to Miami to visit the Nana after she tells Sandy she is getting married. Unable to go because of work, Kirsten is left on her own to deal with her feelings for Carter. Trey misinterprets Marissa's friendship; Zach invites Summer to a home-cooked dinner.
OC-222 The Showdown 2.22 John Stephens May 5, 2005
Seth and Zach declare themselves rivals for Summer's affections; Marissa is still reeling from being nearly raped by Trey; Sandy confronts Kirsten when her drinking problem becomes very apparent; Caleb hands divorce papers to Julie.
Theosea The O.Sea 2.23 Josh Schwartz May 12, 2005
Seth and Zach squabble over who should take Summer to the prom and who will meet George Lucas for dinner; Sandy takes drastic actions with a recovering Kirsten; Ryan starts to piece together what happened between Trey and Marissa, courtesy of Theresa; Julie's attempts to poison Caleb take a surprise turn.
OC-224 The Dearly Beloved 2.24 Josh Schwartz May 19, 2005
Kirsten hits rock bottom after Caleb's funeral, prompting Sandy to finally take action; Jimmy Cooper resurfaces and almost immediately renews ties with a mourning Julie; Jess bullies Trey into participating in a drug deal that turns into a shootout; Ryan finally learns the truth about what happened between Trey and Marissa, leading to a bloody confrontation.

Season 3Edit

Picture Title Episode # Writer Episode #
OC-301 The Aftermath 3.01 Josh Schwartz September 8, 2005
It has been a couple of months since the shooting. Trey has been in a coma all this time leaving the District Attorney impatiently waiting for his side of the story. Feeling the pressure from the community the D.A. continues to put pressure on Ryan, Marissa, Seth, Summer and others for more information. Meanwhile Julie is steaming mad because Caleb’s accountant won’t give up the goods on Caleb’s will and Kirsten is still in rehab.
Theshapeofthingstocom The Shape of Things to Come 3.02 J.J. Philbin September 15, 2005
Social Chair Summer tries to plan this year’s carnival but is having much difficulty due to a little pest named Taylor. Sandy is surprised to find Kirsten has been released from rehab but instead of informing him, she has been living with another woman named Charlotte who she met in rehab. Julie and Sandy meet with the Dean and Dr. Kim to discuss Ryan and Marissa’s future at Harbor High. Later Ryan and Marissa partake in a similar meeting. Elsewhere Jimmy meets a man and feels more than open to discuss his money problems with him.
Theendofinnocence The End of Innocence 3.03 Stephanie Savage September 22, 2005
Jimmy must make once more the difficult decision to leave or stay with his family; Kirsten returns to the Cohen household while Charlotte has to leave her house; Marissa and Ryan face a possible separation; Taylor lords over the school musical and makes Summer and Seth her stooges.
Thelastwaltz The Last Waltz 3.04 John Stephens September 29, 2005
Marissa begins her first day at Newport Union Public School and Ryan doesn't seem to take a liking to the new friends she's made; Charlotte's true intentions towards Kirsten are revealed; Summer finds out the horrifying truth between the Dean and Taylor; Kirsten has a big decision to make regarding the Company.
Theperfectstorm The Perfect Storm 3.05 Mike Kelley November 3, 2005
Ryan decides to make a life-changing decision that Sandy surprisingly supports, and Marissa turns to her new public school friends for help with Ryan. Meanwhile, Harbor High's Dean of Discipline, Dean Hess, continues his crusade to ruin Ryan's future, and Summer and Seth go on their own crusade to reveal Dean Hess's secret. Meanwhile, Charlotte makes Julie an offer she cannot refuse.
Theswells The Swells 3.06 J.J. Philbin November 10, 2005
Taylor Townsend locks up Seth's night when she throws a Harbor School event that keeps Summer at a distance. Meanwhile, Marissa's new friendships at public school worry Summer and she enlists Ryan's help. Meanwhile, Sandy works on a plan for the Newport Group and forms a new partnership. And Charlotte convinces Julie and Kirsten to edge back into Newport society.
Theangermanagement The Anger Management 3.07 John Stephens November 17, 2005
When the gang heads to The Bait Shop to see The Subways, Taylor's horsing around causes a major rift between Seth and Summer. Marissa, determined to end the potentially explosive rift between Ryan and Volchok, does whatever it takes to watch out for Ryan. Meanwhile, Matt, Sandy's Newport Group partner, goes above and beyond the call of duty; Julie Cooper reigns supreme as the only "bitch" in Orange County; and Ryan needs to use his head for once.
Thegameplan The Game Plan 3.08 Cory Martin December 1, 2005
As college options are weighed, Seth looks east, Summer west and Taylor looks happy with their possible separation. Ryan, meanwhile, tries to persuade Marissa to go to school at all before Johnny proposes another direction. Elsewhere, Kirsten offers Julie a business opportunity.
Thedisconnect The Disconnect 3.09 Stephanie Savage December 8, 2005
Ryan takes an internship working for Sandy and Matt at the Newport Group, but he ends up working harder to save Matt's reputation. Summer and Seth, determined to get accepted to Brown University, do whatever it takes to stand out at Harbor School. Johnny finally tells Marissa how he really feels. After Ryan and Marissa cross paths, they end up telling each other the truth.
Thechrismukkahbar The Chrismukkah Bar Mitz-vahkkah 3.10 Josh Schwartz December 15, 2005
After the gang spends hours picking out the perfect Christmas trees, they devise a special plan to help a friend in need. Meanwhile, the holidays bring out a somber Summer who misses her mom, and Johnny's sudden misfortune forces him to take matters into his own hands. Kirsten, meanwhile, puts the past behind her and reaches out to Julie Cooper. And when a reminiscing Seth vows to put a little "mukkah" into Ryan's "Chris," Ryan gets Bar-Mitz-vahkkahed on the third annual O.C. "Chrismukkah" episode.
Thesafeharbor The Safe Harbor 3.11 Mike Kelley January 12, 2006
Summer, Seth and Ryan launch a mission-impossible campaign to get Marissa back into Harbor, and Johnny struggles between a friend's happiness and his own feelings. Meanwhile, Sandy must make an ethical decision that could change Marissa's fate, and Julie Cooper and Dr. Roberts are apprehensive about admitting to the lies they have told their daughters.
Thesisteract The Sister Act 3.12 Leila Gerstein January 19, 2006
Kaitlin Cooper, returns to the O.C. during her winter break from an exclusive Montecito boarding school, bringing a lot of attitude and a few secrets of her own. Much more in the mold of her mother Julie Cooper than her sister Marissa, Kaitlin turns heads as she tries to get closer to her family the only way she knows how.
Thepotstirrer The Pot Stirrer 3.13 John Stephens January 26, 2006
While Marissa does all she can to get to know her sister, Kaitlin just stirs up trouble for the gang as she prepares to celebrate her birthday. Sandy encourages Seth about college, but Seth finds a better alternative. Sandy and Matt work together to secure a contract for the new hospital. And Julie continues her quest to put her family back together again.
Thecliffhanger The Cliffhanger 3.14 J.J. Philbin February 2, 2006
Summer discovers the truth about Cohen, while Sandy and Matt encounter an obstacle with their hospital project. Meanwhile, Kirsten and Julie take their matchmaking business a little too far, causing Julie to go into hiding. Marissa finally tells Johnny how she truly feels and Kaitlin wonders which "Cooper" Johnny really likes. When Johnny and Kaitlin head to the beach, Kaitlin finds Johnny at the edge of reason.
Theheavylifting The Heavy Lifting 3.15 Stephanie Savage February 9, 2006
Tragic news forces the gang to sort out their problems and face the reality of the situation. After Sadie arrives in Newport, Ryan helps her move and get rid of Volchok, causing Ryan to question his and Marissa's relationship. Meanwhile, Kaitlin's winter break is over - just as she gets close to her family, she once again has to say goodbye. Will she ever return to the O.C.? And in the wake of Newport's latest events, Kirsten and Julie press on with their Valentine's Day party.
Theroadwarrior The Road Warrior 3.16 Mike Kelley March 9, 2006
Summer asks Julie and Kirsten, via their matchmaking company, to find a woman for her father. Ryan helps Sadie find her trouble-ridden uncle Jack, and Sadie wants to collect. Marissa is yet again involved in another police investigation, and she and Ryan break up.
Thejourney The Journey 3.17 John Stephens March 16, 2006
Summer and Julie talk about the latter's relationship with Dr. Roberts. Sandy goes to jail to visit Dawn Atwood. Volchok insists a little too much to have a talk with Marissa. Matt comes to her rescue. Later, she decides not to go to Ryan's birthday party, goes to the beach and rings Volchok, to talk to him. The episode ends with Marissa resting her head on Volchok's shoulder.
Theundertow The Undertow 3.18 Mark Fish & J.J. Philbin March 23, 2006
Ryan has problems opening up to Sadie. Henry Griffin drops by the Newport Group and wants to talk to Sandy about problems with Matt's personal life. Taylor helps Seth and Summer deal with their couple problems. Marissa shows weakness towards Volchok, and one thing leads to another.
Thesecretsandlies The Secrets and Lies 3.19 Stephanie Savage & Josh Schwartz March 30, 2006
Julie and Dr. Roberts announce their engagement; Marissa seeks solace with some bad company. Ryan tries to move on with Sadie, Kirsten surprises Seth with a night out, and Sandy's woes with Matt continue.
Thedayaftertomorrow The Day After Tomorrow 3.20 Leila Gerstein April 6, 2006
The college acceptance and rejection letters arrive leaving the kids to consider their future. Taylor organises a college bonfire party; Summer and Marissa fix their problems.Seth tells summer she should go to brown but he will go elswhere causing them to break up
Thedawnpatrol The Dawn Patrol 3.21 Mike Kelley April 13, 2006
Ryan visits his mother but there's a problem. Taylor and Summer aim to find out Seth's secret. Julie helps Marissa out of a bad situation. Sandy solves his work problems but hurts Kirsten in the process.
Thecollegetry The College Try 3.22 J.J. Philbin April 20, 2006
Graduation is just weeks away and Ryan, Seth, Summer and Marissa leave Newport to attend their respective pre-frosh orientations at UC Berkeley and Brown. Kirsten is suprised by who she sees at the airport. Seth is suprised by who he meets at Brown. Later, Sandy and Kirsten attend a hospital benefit where Kirsten returns to an old habit.
Thepartyfavor The Party Favor 3.23 John Stephens April 27, 2006
Taylor hits a high at prom, while Summer falls flat with her date. Seth and Anna plan to win Summer back. Marissa convinces Volchok to go to the prom and Ryan brings an unexpected old flame. When one of the girls is elected prom queen, it truly becomes a night to remember. Later, Taylor's prom funds are missing and Ryan returns to his old ways.
Themanoftheyear The Man of The Year 3.24 Stephanie Savage May 4, 2006
Ryan and Volchok make a deal. Sandy is named Man of The Year. Marissa goes to visit Kaitlin at boarding school. Meanwhile, Theresa has to make a difficult decision.
OC-325 The Graduates 3.25 Bob DeLaurentus & Josh Schwartz May 18, 2006
After the graduation ceremonies Ryan has to face Volchok's threat. Merissa decides to help Ryan, because without her, he would have never been dragged into the problems with her recent affair. Although they pay off Volchok, season 3 ends tragically.

Season 4Edit

Picture Title Episode # Writer Episode #
TheOCS4E1039 The Avengers 4.01 Josh Schwartz November 2, 2006
Ryan works and lives in a bar, Seth works in a comic book store, Taylor lies about being in Paris and Summer has become a tree-hugging vegan. What madness is going throughout Orange County?
OC-402 The Gringos 4.02 Josh Schwartz November 8, 2006
Seth tags along with Ryan who travels to Enseniada, Mexico to look for the fugitive Volchok, and tries to hold off Ryan from doing something drastic. Back in Newport, there is a clothing drive at Harbor High, where Julie persuades Kaitlin to participate in it, until she learns Kaitlin's true agenda. At Brown University, Taylor pays Summer a surprise visit, but does not want to confide in her about her problems of her own back in France.
250px-OC-403 The Cold Turkey 4.03 Josh Schwartz November 9, 2006
Volchok turns to Sandy for advice, without Ryan's knowledge. Summer prepares to face life in Newport as she returns from Brown. Meanwhile, Julie finds herself alone on Thanksgiving when she is not welcome in the Cohen's house.
250px-OC-404 The Metamorphosis 4.04 Josh Schwartz November 16, 2006
Summer soul-searches during a visit from Seth. Taylor pleads for Ryan's help with her marriage. Sandy longs for a guys' night. Julie vows to turn over a new leaf in moving on from Marissa's Death.
Thesleepingbeauty The Sleeping Beauty 4.05 Josh Schwartz November 30, 2006
Ryan can't sleep, and a smitten Taylor tries to seduce him by becoming his sleep therapist. Meanwhile, Seth vows not to call Summer, and Kaitlin struggles when Julie has a fling with her tennis instructor. Summer and Che take their activism to a new level, but pay the consequences later.
Thesummerbummer The Summer Bummer 4.06 Josh Schwartz December 7, 2006
Summer gets kicked out Brown, thanks to her friend Che. Seth leaves Newport to visit Summer at Brown, but runs into Che. Ryan has fantasies about Taylor after kissing each other. And Kaitlin throws a party at Dr. Roberts house to get even with a popular girl. Meanwhile, Julie learns NewMatch is no long just a dating service.
Thechrismukk-huh The Chrismukk-huh? 4.07 Josh Schwartz December 14, 2006
Ryan and Taylor fall off a ladder and end up in the hospital. Taylor confronts Veronica about her attitude. Meanwhile, a letter from Marissa is sent to the Cohen house.
Theearthgirlsareeasy The Earth Girls Are Easy 4.08 Josh Schwartz December 28, 2006
Ryan plans a surprise trip for Taylor, but Seth comes along and brings Summer, whose future is at stake. Meanwhile, Bullit gets an old friend to take care of Julie's accounting, much to her displease.
Themytwodads The My Two Dads 4.09 Josh Schwartz January 4, 2007
Kaitlin fails a class presentation and is forced to work with a smart classmate, whom she ends up liking. Seth and Summer move forward with their plans, regardless of how they really feel. Sandy confronts Frank on why he's in Newport.
Thefrenchconnection The French Connection 4.10 Josh Schwartz January 11, 2007
Henri-Michel tells Ryan about Taylor's life in France, forcing him to question their relationship. Seth seeks Dr. Roberts' permission to marry Summer. Kaitlin realizes she likes Will. Summer reconnects with Holly and worries about her future. Meanwhile, Kirsten makes a shocking discovery at NewMatch.
Thedreamlover The Dream Lover 4.11 Josh Schwartz January 17, 2007
Che brings Seth on a trip to the forest. Taylor decides she should no longer see Ryan. Julie begs for Kirsten's reconciliation. Kaitlin shuts Will out of her life.
Thegroundhogday The Groundhog Day 4.12 Josh Schwartz January 25, 2007
Ryan tries to act like he doesn't miss Taylor, who is seeing a therapist. Kirsten's turning 40, but has her mind focused on other things. Julie is having an affair that Kaitlin does all she can to stop. Che makes a discovery about Seth.
Thecaseofthefranks The Case Of The Franks 4.13 Josh Schwartz February 1, 2007
Ryan and Taylor devise a plan to bring Julie and Frank closer, but Kaitlin tries to keep Bullit in Julie's personal life. Summer begins to have doubts in her relationship with Seth. Kirsten opens up about her past with Jimmy to Sandy as they prepare for their new baby.
Theshakeup The Shake Up 4.14 Josh Schwartz February 8, 2007
Kaitlin does all she can to sabotage Julie and Frank's relationship. Ryan and Taylor tell each other how they feel. Summer encourages Seth to find something he's passionate about. Kirsten realizes what Newport's society is all about. As the night comes to a close, an earthquake hits Newport Beach.
Thenightmoves The Night Moves 4.15 Josh Schwartz February 15, 2007
After the earthquake, Ryan tells Seth he needs to get to the hospital, but doesn't want to worry Taylor. An aftershock leaves Kirsten wondering if her unborn baby is still alive. Taylor takes control when Summer and she hear an intruder in their home. Kaitlin and Julie are trapped in an ice cream store.
Theendsnotnearitshere The End's Not Near, It's Here 4.16 Josh Schwartz February 22, 2007
Six months after the trauma of the Newport earthquake, Ryan and the rest of the Cohens struggle with their living arrangements in the aftermath of the destruction of their house. Both Ryan and Taylor struggle with their feelings for each other despite knowing that they have nothing in common. Seth feels he's keeping Summer back from her activist work programs, but does not want to let go of her. Meanwhile, Julie, whom is now three months pregnant herself, is planning her upcoming wedding to Gordon Bullit, but Kaitlin realizes that she is not over Frank Atwood. Seth and Ryan visit the old house that Sandy and Kirsten lived in before there move to Newport Beach. When they pressure Sandy and Kirsten to visit their old house, where a gay couple now resides there, Kirsten happens to go into labor, and soon, Julie's wedding becomes the scene of the place.