Episode 72 of "Smallville"
s04e06 Transference
Title: Transference
Original Air Date: 10/27/2004 on WB
Director: James Marshall
Writer: Todd Slavkin, Darren Swimmer
Guest Stars: Terence Kelly (Doctor), Rick Faraci (Tattoed Inmate), Margot Kidder (Bridgette Crosby)
Plot Outline:
Clark is drawn to the state penitentery by one of the kryptonian crystals, which Lionel is using to switch bodies with Lex. Clark intervenes and Lionel enters his body instead. While Lionel uses his newfound super-powers to regain his lost fortune and alienate Clark's friend, Clark must convince his parents that he is the "real" Clark and reverse the processs, while avoiding murderous convicts.
Episode Pictures:
