The BAU leads the investigation into a string of murders taking place in supposedly haunted houses in Lewiston, Maine.
Voight and the team help retired Cmdr. Perry extract his nephew from a corrupt unit; Lindsay struggles to stay clean; a woman from Olinsky's past contacts him.
The team investigates the death of a country music singer whose remains were found in a shallow grave; Brennan takes a look at Wendall's injuries after he breaks his arm during a hockey game.
Ruth takes an interest in a woman who died friendless; a prostitute becomes Brenda's literary muse.
A politically ambitious LAPD captain comes up against a streetwise detective who isn't above bending the rules in his effort to fight crime as he enriches himself and his men.
