Kirby and Dan look to the past, uncovering multiple cold cases with puzzling similarities. Harper takes a dangerous new interest in Dan.

The Mayor makes his presence known to Konstantin. Bunny brings Mike up to speed on a failed assassination attempt.

When a prominent doctor is found dead in a ritualistic slaying, the team must race against time to hunt down a religiously motivated serial killer. Also, Scola faces a life-or-death…

Ethan hires an old Navy colleague to join him in the ED. A final custody hearing threatens to separate Charles and his daughter. Maggie must make a choice that will…

Intelligence chases down a lead in the ongoing serial killer investigation as news of the case reaches the public.

Intelligence teams up with ASA Chapman to take on an abduction case involving a teenager. The case hits close to home for Voight, leading him to take a personal interest…