Michael Canavan

With Derek away, Meredith spends time with Amelia and finds out her true feelings about her time in Seattle. Bailey deals with the ramifications of her actions and Callie receives devastating news. Meanwhile, the residents panic after hearing that one of them will be fired.

The BAU team investigates the mass murder of college students, similar to wartime methods used by an Indian tribe long ago.

A skull smashes the windshield of a car driven by a group of teenagers on the freeway; a trail of suspects leads Brennan and Booth to a strange cannibalistic society; Cam suggests that Angela hire a private investigator to find her ex-husband.

Ari must negotiate a deal between Amanda and the studio; Eric suspects that Vince and Amanda's relationship is sabotaging the deal; Drama saves a slow horse.

Francie hypnotizes Will and burns the mark of the second double on his retina.

The Cigarette-Smoking Man offers to show Scully the cure for cancer is she travels with him – and hides her trip from Mulder.