1x15 The Third Wheel
First Aired: Jan. 07, 2004 on FOX
Summary: Hailey moves in with the Cohens, and proves to be a difficult house guest. Kirsten is unable to confront Hailey about her problematic tendencies, so Sandy takes things into his own hands. Meanwhile, Seth and Anna have a hard time telling Summer about their new relationship and Ryan becomes…
Main Characters in this Episode
Seth: Yeah, we don't let him out much.
- The band Rooney makes a guest appearance. Rooney member Robert Schwartzman is the brother of Jason Schwartzman, former drummer of Phantom Planet who provided the O.C.'s theme song