Bad-girl "Jess Sathers" played by Nikki Griffin is in the pool house with Rachel Bilson and Melinda Clarke to discuss Season 3, Episode 18, “The Undertow.” Nikki discusses getting the role of “Jess” and when she decided that acting wasn’t for her and that she now prefers to work behind the scenes. Nikki also talks about filming the infamous pool scene in Season 2 and how she was brought back for Season 3 to help push the Trey/Ryan storyline along. The Undertow Synopsis: Jess returns with news about Trey. Kirsten helps Ryan confront his savior complex. Seth and Summer receive sex counseling from Taylor.