When Jonathan (John Schneider) begins to act strangely, Clark (Tom Welling) 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 (John Glover) catches him there and begins putting the pieces together - leading him straight to Dr. Swann (guest star Christopher Reeve). As the two billionaires face off, a deal is struck and Lionel's true motives are revealed.