Episode 61 of "Smallville"
s03e17 Legacy
Title: Legacy
Original Air Date: 04/14/2004 on WB
Director: Greg Beeman
Writer: Jeph Loeb
Guest Stars: John Shaw (Cave Scientist), Daniel Bacon (2nd FBI Agent), Gary Hudson (FBI Agent Frank Loder), Timothy Paul Perez (Agent Tobin), Nicole Van Zanten (Crowd)
Plot Outline:
When Jonathan begins to act strangely, Clark believes Jor-El is sending Jonathan messages through the key and is the cause for his father's withdrawal from the family. Clark goes down to the caves to confront his biological father but Lionel catches him there and begins putting the pieces together – leading him straight to Dr. Swann. As the two billionaires face off, a deal is struck and Lionel's true motives are revealed.
Episode Pictures:
