The O.C. The Undertow (Season 3, Episode 18)
TV-14
TV Episode | 43 min | Comedy, Drama, Romance

The O.C.

The Undertow (Season 3, Episode 18)

TV-14

TV Episode | 43 min | Comedy, Drama, Romance

Jess returns with news about Trey. Kirsten helps Ryan confront his savior complex. Seth and Summer receive sex counseling from Taylor.

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Cast	+ Add Cast
20 cast members

Name	Known for
Peter Gallagher Sandy Cohen Sandy Cohen See fewer	American Beauty (1999)
Kelly Rowan Kirsten Cohen Kirsten Cohen See fewer	The O.C. (2003)
Ben McKenzie Ryan Atwood Ryan Atwood See fewer	Gotham (2014)
Mischa Barton Marissa Cooper Marissa Cooper See fewer	The O.C. (2003)
Adam Brody Seth Cohen Seth Cohen See fewer	The O.C. (2003)
Melinda Clarke Julie Cooper (credit only) Julie Cooper (credit only) See fewer	Spawn (1997)
Rachel Bilson Summer Roberts Summer Roberts See fewer	Jumper (2008)
Jeff Hephner Matt Ramsey Matt Ramsey See fewer	Eric (2024)
Autumn Reeser Taylor Townsend Taylor Townsend See fewer	The Wedding Veil (2022)
Cam Gigandet Kevin Volchok Kevin Volchok See fewer	Twilight (I) (2008)
Nikki Griffin Jess Sathers Jess Sathers See fewer	The Fast and the Furious: Tokyo Drift (2006)
Shaun Duke Henry Griffin Henry Griffin See fewer	Sideways (2004)
Matt Cohen Jim (as Matthew Cohen) Jim (as Matthew Cohen) See fewer	South of Nowhere (2005)
Nikki Reed Sadie Campbell Sadie Campbell See fewer	Thirteen (2003)
Kat Graham Kim (as Katerina Graham) Kim (as Katerina Graham) See fewer	How It Ends (2018)
Angelique Little Waitress Waitress See fewer	Black Pepper (2023)
Chris Kerner Frat Guy (uncredited) Frat Guy (uncredited) See fewer	The A-Team (2010)
Logan Marshall-Green Trey Atwood (archive footage) (uncredited) Trey Atwood (archive footage) (uncredited) See fewer	The Invitation (I) (2015)
Kelsey McCann Sorority Girl (uncredited) Sorority Girl (uncredited) See fewer	B.T.K. (2008)
Bradley Stryker Trey Atwood (archive footage) (uncredited) Trey Atwood (archive footage) (uncredited) See fewer	Devil in Ohio (2022)