After Lex is accused of killing a young woman, Clark sets out to prove his innocence and turns to an unlikely source for help - Lionel, which is very interesting since the two are enemies. It reminds me a little bit of Marvel in that sense. 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, leading her to suspect that Jason's mother was there when she got her tattoo. This was a fantastic mystery and interesting episode which shows you more of Lex's dark side. I enjoyed it.