Smallville: Season 5, Episode 19

5 - 19: Mercy

After Martha's life is put in harm's way by a mad tormentor, only Lionel could save her after he is taking hostage by the masked-man. Lionel must win a series of elaborate games in order to survive. Meanwhile Clark confronts Martha about Lionel knowing his true secret, which was told to him by his late father Jonathan in the episode Void. Also Lex confronts Lana about the intimacy that occurred between them.