Matthew Floyd Miller

The BAU goes to Detroit to track an UnSub with a rapidly changing MO. Also, Blake's husband returns from overseas with a life-changing career proposition for her.

The squad investigates a brutal murder and discovers dark secrets at the root of a drug bust gone wrong; Raydor's estranged husband returns to Los Angeles; Jack becomes fast friends with Rusty.

The murder of an off-duty NYPD detective threatens to tear the city apart; Cosgrove mourns the loss of a friend and asks Capt. Benson for help solving the case; McCoy and Price disagree on how to prosecute the culprit.

As Will begins his first day as Proxy Snyder's inside man, Katie makes a secret commitment. Carlos suffers the consequences of Will's actions.