The O.C.

The friends worry as the cops want to know who shot Trey.

Sandy worries about Kirsten's friend. Marissa gets bad news.

Ryan and Marissa enjoy a night to remember.

Marissa attends a new school. Seth gets Summer in trouble.

Ryan makes a life-changing decision with Sandy's support.

Taylor ruins Seth's night by keeping Summer away.

Taylor causes a major rift between Seth and Summer.

The friends plan their futures. Julie returns to her roots.

Ryan works for Sandy. Johnny tells Marissa how he feels.

Kirsten makes amends with Julie. Seth invents a holiday.

The friends try to get Marissa back into their school.

The clan tries to re-create a perfect East Coast Christmas.

Kaitlin causes trouble as she celebrates her birthday.

Kirsten and Julie take their matchmaking business too far.

Tragedy strikes the friends. Johnny's cousin arrives.

Sadie and Ryan take a trip. Ryan returns to his old ways.

Ryan tries to decide whom to invite to his birthday party.

Ryan's nemesis returns. Sandy experiences business pressure.

Marissa seeks solace with bad boy Volchok and his crew.

The kids receive their college acceptance or rejection letters.

Ryan visits his mom. Julie gives Volchok stern advice.

The friends go to college orientations. Seth sees Anna.

Senior prom brings out the best and the worst in everyone.

Marissa visits Kaitlin at boarding school.

The end of senior year brings excitement and drama.