After Lex (Michael Rosenbaum) is accused of killing a young woman, Clark (Tom Welling) sets out to prove his innocence and turns to an unlikely source for help - Lionel (John Glover). Swearing he is a changed man, Lionel offers Clark insight into the crime but he asks for something in return. Meanwhile, Lana (Kristin Kreuk) meets Jason's (Jensen Ackles) parents and has a vivid flashback of the incident in Paris, leading her to suspect that Jason's mother (guest star Jane Seymour) was there when she got her tattoo.