Smallville
S05E19 Mercy
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.
Season 5 Episodes
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Positive Results
Arrival
Touched by an Idol
Mortal
Omissions
Hidden
Cape Cancer
Aqua
Fractured
Thirst
Exposed
Goodbye Slash Rest in Peace
Splinter
Healing Touch
Solitude
Bleeding Heart
Prophylactic Measures
Lexmas
Life in the Balance
Fanatic
Like Cures Like
Lockdown
Cinderella in Scrubs
Reckoning
Body Mass Increase
Vengeance
Selective Breeding
Tomb
A Dose of Reality
Cyborg
Graft
Hypnotic
Code
Void
Virgin Birth
Fragile
Foreign Bodies
Mercy
First Response
Fade
Oracle
Implants, Transplants, and Cuban Aunts
Cutting The Cord
Vessel