Henry Fonda (John S. Bottomly), Tony Curtis (Albert DeSalvo), George Kennedy (Phil DiNatale), Mike Kellin (Julian Soshnick), Sally Kellerman (Dianne Cluny), Hurd Hatfield (Terence Huntley), Murray Hamilton (Frank McAfee), Jeff Corey (John Asgeirsson), William Marshall (Edward W. Brooke), George Voskovec (Peter Hurkos), Richard X Slattery (Ed Willis), Leora Dana (Mary Bottomly), Carolyn Conwell (Irmgard DeSalvo), Jeanne Cooper (Cloe), Austin Willis (Dr. Nagy), Georges Voskovec (Peter Hurkos), Lara Lindsay (Bobbie Eden), 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), George Tyne (Dr. Kramer), Dana Elcar (Luis Schubert), Elizabeth Baur (Harriet Fordin), James Brolin (Det. Sgt. Phil Lisi), David Armstrong (Suspect (uncredited)), Karen Ericson (Pat Bruner (as Karen Huston)), William Traylor (Arnie Carr), Enid Markey (Edna), Carole Shelley (Dana Banks), Dorothy Blackburn (Minnie Adams), Almira Sessions (Emma Hodak), Isabella Hoopes (Bertha Blum), Richard Krisher (Tom), Arthur Hanson (Commissioner), Walter Klavun (Chief of Police), Tim Herbert (Cedric), Matt Bennett (Harold), Penny Williams (Mae), Janis Young (Louise Parker), George Fisher (Mr. Taylor), Nancie Phillips (Barbara Wise (uncredited)), David Lewis (Judge Schroeder), Pamela McMyler (Grace), Alex Rocco (Lt. Lurie (uncredited)), Owen Orr (Dick Matheson)