Smallville · S3, E19
Memoria
To regain key incriminating information about his father's past that he lost when his memory was erased, Lex joins an experimental program headed by Dr. Garner (recurring guest star MARTIN CUMMINS). Knowing that Lex will also remember the secret of Clark's powers if he regains his memory, Clark tries to stop him--but Lionel and Garner capture Clark and expose him to the same radical treatment, hoping to reveal his mystery.
