Tony Curtis
Albert DeSalvo
Henry Fonda
John S. Bottomly
George Kennedy
Det. Phil DiNatale
Mike Kellin
Julian Soshnick
Hurd Hatfield
Terence Huntley
Murray Hamilton
Det. Frank McAfee
Jeff Corey
John Asgeirsson
Sally Kellerman
Dianne Cluny
William Marshall
Atty. Gen. Edward W. Brooke
George Voskovec
Peter Hurkos
Carolyn Conwell
Irmgard DeSalvo
George Furth
Lyonel Brumley
Richard X. Slattery
Det. Capt. Ed Willis
William Hickey
Eugene T. O'Rourke
Eve Collyer
Ellen Ridgeway
Gwyda Donhowe
Alice Oakville
Alex Dreier
News Commentator
John Cameron Swayze
T.V. Narrator
Shelley Burton
David Parker
Elizabeth Baur
Harriet Fordin
James Brolin
Det. Sgt. Phil Lisi
William Traylor
Arnie Carr
Karen Ericson
Pat Bruner (as Karen Huston)
Dorothy Blackburn
Minnie Adams
Almira Sessions
Emma Hodak
Isabella Hoopes
Bertha Blum
Arthur Hanson
Commissioner
Walter Klavun
Chief of Police
David Lewis
Judge Schroeder
Nancie Phillips
Barbara Wise
Harry Carter
Detective (uncredited)