While Gideon is sidelined on crutches at BAU headquarters, Hotchner and the BAU go to Harrington, Tennessee, in an attempt to get inside the mind of a psychotic killer whose disorganized and erratic fantasies lead him to murder.
Harm and the Admiral try to prevent a salvage hunter from recovering a submarine that disappeared just before the attack on Pearl Harbor, and find out the sub may have been involved in a long-forgotten conspiracy.
Monica and Tess must prevent a jealous widower from destroying his son's friendship with the town eccentric.
