After Lex is accused of killing a young woman, Clark sets out to prove his innocence and asks an unlikely source for help--Lionel. Swearing he is a changed man, Lionel offers Clark insight into the crime, but he asks for something in return. Meanwhile, Lana meets Jason's parents and has a vivid flashback of the incident in Paris when she got her tattoo. Lana suspects that Jason's mother, Genevieve (recurring guest star Jane Seymour - "Dr. Quinn, Medicine Woman," "Somewhere in Time"), was present when Lana got tattooed.