Smallville - Season 9, Episode 20
Tess breaks into Watchtower, triggering an elaborate security system that Chloe installed, ultimately trapping the two women inside. Chloe realizes that the Kandorians are downloading information from the Watchtower server, which prompts her to make a drastic move. Oliver confronts Zod and winds up clinging to life with a "Z" scorched into his chest. Clark realizes Zod has given his soldiers super powers.