smallville Season5 Episode19

Lionel's limo stops on a railroad; a man wearing a mask appears on the screen forcing Lionel to play a game. Unless he wins the game, he will be hit by a oncoming train.
Surviving the ordeal, Lionel confronts Lex in the mansion, and Lex denies being responsible. In his office, Lionel is attacked from behind and knocked
unconscious. He wakes up next to a charred body in a cage; the masked man shows up on a screen ordering him to play another game, which he narrowly passes.

This mysterious man is a fucking psycho; having kidnapped Martha, he put her in a sealed container which water is poured into. Lionel has no option but to continue to play his sick games.
After passing a word puzzle, they are trapped in an elevator and a gun is given to them. If one of them does not die within 2 minutes, they will all die. Lionel is willing to sacrifice his own life to save Martha's, but it turns out that the gun is unloaded. The psycho then reveals his identity and makes the elevator to fall down to kill them both.

The ending is predictable: Clark comes to the rescue, saving them; they have a nice little talk;etc.