Smallville S8 ep6

Clark looks into a recent attack in a theater that may be the work of a serial killer. Suspecting it could be someone who is meteor-infected, he demands that Chloe release the names of the people she is counseling at the Isis Foundation, which causes a rift between the friends.

Davis fears that his blackouts could mean that he is the serial killer and collects evidence that may implicate him. Fearing the worst, he confesses his suspicions to Chloe.