1. "The Silencer"
JJ (A.J. Cook), Hotch (Thomas Gibson) and newest BAU member Alex Blake (Jeanne Tripplehorn) look at evidence as the BAU investigates the murder of a victim with the trademark handiwork of the UnSub “The Silencer,” who leaves behind victims with his unique trademark of sewing their mouths shut, on the eighth season premiere of CRIMINAL MINDS. Photo: Monty Brinton/CBS © 2012 CBS Broadcasting Inc. All Rights Reserved.