Detective Bobby Corcoran, on the trail of a serial killer, is about to come face to face with the most startling suspect of all: himself. Having suffered a traumatic childhood incident in which he watched his father stab his step-mother, bobby experiences fits of rage and depression, coupled with frequent blackouts, that leave him wondering where he's been. As the evidence mounts indicating he may be the one mutilating women, Bobby, with the help of Dr. Anne Richmond desperately searches his past for a sign that he is not like his father.