To gain tangible proof the organism inside the rock is an alien entity, Mulder joins forces with the duplicitous Krycek and comes face to face with the starling depths of his deception.
Clark discovers the reason Lana married Lex then and sets out to kill Lionel. Lex tries to use DNA from the last phantom to power his super-soldiers. Lois goes to a dam to search for Lex's lab but is caught by a security guard and fatally injured. Chloe's power is discovered.
Colonel Broyles is hit hard when a serial kidnapper `Over There' strikes again. Meanwhile, Olivia needs Henry's help as her fight to return home rages on.