Spiral: From the Book of Saw

Detective Zeke Banks, the station's black sheep, is far from thrilled when Captain Angie Garza assigns him a new, fresh-out-of-school partner eager to prove his worth. As they investigate the mysterious case of a mutilated body found in the subway tunnels, the mismatched pair soon finds itself on the trail of a sadistic serial killer with a vengeance. The modus operandi seems familiar; the psycho's elaborate traps and punishing devices resemble those of the infamous Jigsaw Killer. However, there is one significant difference: the deranged mind pulling the strings only targets police officers. Is a twisted copycat on the loose? If corruption runs deep in the department, how far is Banks willing to go to unravel the spiral?