Smallville S05E19 - Mercy

Episode Overview

Lionel finds himself captured by a mysterious assailant who compels him to engage in intricate challenges, all with the ultimate goal of survival. Meanwhile, after Clark reveals to Martha that Lionel is aware of his hidden identity, she decides to confront him. In doing so, she unwittingly becomes embroiled in the deadly game, battling not just for Lionel's life but her own as well.

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