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What All The Cast Members Of 'The O.C.' Are Up To Now

Mischa Barton
Mischa Barton played the brooding Marissa Cooper, a popular and rich teenager with just a bit of a troubled mind. She almost instantly became involved with equally-troubled Ryan Atwood when he came to town, despite their pretty much opposite upbringings. Marissa died in the last episode of Season 3, and everyone knows that despite there being a fourth season, the series died right along with her.