Chloe returns and begs Clark to kill Davis, claiming he can no longer keep the beast under control. Tess has assembled a team of meteor freaks, including Plastique, to track…

Clark believes a recent attack in a theater may be the work of a serial killer; Davis fears that his blackouts could mean that he is the killer.

A heartbroken psychotic wearing a watch jeweled with kryptonite abducts Chloe and Jimmy and subjects them to a polygraph; while searching for them, Clark and Lois pose as a couple.

Tess and her team perform tests on the crystal she retrieved from the Arctic, causing it to send a beam of light into the universe; the beam of light triggers…

What happened to Sam during the months Dean was dead? During the search for a girl named Anna Milton, who has a mysterious connection to angels, Sam reveals the astonishing…