Smallville

Season 8, Episode 18

Episode Title: Eternal

Air Date: 2009-04-02

Overview:

Tess tries to kill Davis by blowing up his truck. However, after he escapes, she realizes she needs help to destroy him and turns to Clark. Tess reveals Davis' secret childhood with the Luthors and hints that she knows Clark's true identity. Meanwhile, Davis runs to Chloe for help.