Here's why Mischa Barton’s Marissa Cooper left The OC The show’s creator, Josh Schwartz, had always planned for Barton’s character, Marissa, to be written out. Additionally, Barton felt that ...

Viewers are curious to know why Marissa Cooper, portrayed by Mischa Barton, left the Fox drama series, The O.C. Introduced in Season 1, Marissa was a key character who was rebellious, risk-taking ...

After Luke witnesses a close encounter between Marissa and Ryan, he confronts Ryan and a fight breaks loose. Ryan's presence in Newport is exposed in a big way, and two arrests are made.