Boston is being terrorized by a series of seemingly random murders of women. Based on the true story, the film follows the investigators path through several leads before introducing the Strangler as a character. It is seen almost exclusively from the point of view of the investigators who have very few clues to build a case upon.
as Albert DeSalvo
as John S. Bottomly
as Det. Phil DiNatale
as Julian Soshnick
as Terence Huntley
as Det. Frank McAfee
as John Asgeirsson
as Dianne Cluny
as Atty. Gen. Edward W. Brooke
as Peter Hurkos
as Mary Bottomly
as Irmgard DeSalvo
as Cloe
as Dr. Nagy
as Bobbie Eden
as Lyonel Brumley
as Det. Capt. Ed Willis
as Eugene T. O'Rourke
as Ellen Ridgeway
as Alice Oakville
as News Commentator
as T.V. Narrator
as David Parker
as Harriet Fordin
as Det. Sgt. Phil Lisi
as Dr. Kramer
as Luis Schubert
as Arnie Carr
as Dana Banks
as Pat Bruner (as Karen Huston)
as Suspect
as Edna
as Minnie Adams
as Emma Hodak
as Bertha Blum
as Tom
as Commissioner
as Chief of Police
as Cedric
as Harold
as Mae
as Louise Parker
as Mr. Taylor
as Judge Schroeder
as Grace
as Dick Matheson
as Barbara Wise
as Lt. Lurie
as Steve
as Detective (uncredited)