Casey attends New Union and dates Johnny Harper.
She befriends Marissa Cooper when she enrolls at Union, when she notices that Johnny and Marissa are growing closer, she feels jealous and suspicious, finally cheating on Johnny by making out with his rival Kevin Volchok. Johnny breaks up with her. She later explains to Marissa that she's not a bad person, and she could just see Johnny was falling in love with Marissa.

Played by Kayla Ewell


Season 3