Tony Curtis as Albert DeSalvo

Henry Fonda as John S. Bottomly

George Kennedy as Det. Phil DiNatale

Mike Kellin as Julian Soshnick

Hurd Hatfield as Terence Huntley

Murray Hamilton as Det. Frank McAfee

Jeff Corey as John Asgeirsson

Sally Kellerman as Dianne Cluny

William Marshall as Atty. Gen. Edward W. Brooke

George Voskovec as Peter Hurkos

Leora Dana as Mary Bottomly

Carolyn Conwell as Irmgard DeSalvo

Jeanne Cooper as Cloe

Austin Willis as Dr. Nagy

Lara Lindsay as Bobbie Eden

George Furth as Lyonel Brumley

Richard X. Slattery as Det. Capt. Ed Willis

William Hickey as Eugene T. O'Rourke

Eve Collyer as Ellen Ridgeway

Gwyda Donhowe as Alice Oakville

Alex Dreier as News Commentator

John Cameron Swayze as T.V. Narrator

Shelley Burton as David Parker

Elizabeth Baur as Harriet Fordin

James Brolin as Det. Sgt. Phil Lisi

George Tyne as Dr. Kramer

Dana Elcar as Luis Schubert

William Traylor as Arnie Carr

Carole Shelley as Dana Banks

Karen Ericson as Pat Bruner

Enid Markey as Edna

Dorothy Blackburn as Minnie Adams

Almira Sessions as Emma Hodak

Isabella Hoopes as Bertha Blum

Richard Krisher as Tom

Arthur Hanson as Commissioner

Walter Klavun as Chief of Police

Tim Herbert as Cedric

Matt Bennett as Harold

Penny Williams as Mae

Janis Young as Louise Parker

George Fisher as Mr. Taylor

David Lewis as Judge Schroeder

Pamela McMyler as Grace

Owen Orr as Dick Matheson

Tom Aldredge as Harold Lacey (uncredited)

David Armstrong as Suspect (uncredited)

Benjie Bancroft as Detective (uncredited)

Loren Brown as Police Officer (uncredited)

Robert Buckingham as Bailiff (uncredited)

Ron Burke as Man in Phone Booth (uncredited)

Violet Carlson as Woman (uncredited)

Harry Carter as Detective (uncredited)

James J. Casino as Suspect (uncredited)

Linda Clifford as Bystander (uncredited)

Kevin Coates as Boy (uncredited)

Barbara Collentine as Nurse (uncredited)

Bill Couch as Police Officer (uncredited)

Bob Courts as Detective (uncredited)

Dennis Cross as Steve (uncredited)

Yutta D'Arcy as Girl (uncredited)

Mark Dawson as Police Officer (uncredited)

Dick Dial as Driver (uncredited)

Bennie E. Dobbins as Police Officer (uncredited)

Edmund Donnelly as Bartender (uncredited)

Ken DuMain as Suspect (uncredited)

Larry Duran as Police Officer (uncredited)

Tommy Flanders as Minor Role (uncredited)

Eddie Frank as Michael DeSalvo (uncredited)

Nicci-Ann Frank as Judy DeSalvo (uncredited)

Cornelius Frizell as Bit Part (uncredited)

Jack Garner as Technician (uncredited)

Chance Gentry as Det. Doran (uncredited)

Gina Harding as Audri (uncredited)

Bob Harks as Suspect (uncredited)

Chuck Hicks as Cop (uncredited)

Alfred Hinckley as Manager at Charley's (uncredited)

George Holmes as Clerk (uncredited)

Shep Houghton as Detective (uncredited)

Brick Huston as Technician (uncredited)

Michael Jeffers as Courtroom Spectator (uncredited)

Hubie Kerns as Police Officer (uncredited)

Clint Kimbrough as Stanley Hodak (uncredited)

Mike Lally as Crime Scene Investigator (uncredited)

Sandy McPeak as Reporter (uncredited)

Paul Napier as Technician (uncredited)

Tom Noel as Cop (uncredited)

Victor Paul as Police Officer (uncredited)

John Pedrini as Detective (uncredited)

Jack Perkins as Cop Arresting Man Goosing Woman at Crosswalk (uncredited)

Nancie Phillips as Barbara Wise (uncredited)

Charlie Picerni as Driver (uncredited)

David Proval as Removalist (uncredited)

Jean Ransome as Worried Woman (uncredited)

John Richards as Mr. Barris (uncredited)

Hank Robinson as Police Officer (uncredited)

Alex Rocco as Lt. Lurie (uncredited)

Boyd Santell as Orderly #2 (uncredited)

George Sawaya as Police Officer (uncredited)

Walter Scott as Police Officer (uncredited)

Eddie Smith as Suspect (uncredited)

Hagen Smith as Suspect (uncredited)

Marie Thomas-Foster as Gloria (uncredited)

Rex Thompson as Nat (uncredited)

Meredith Vincent as Mrs. Taylor (uncredited)

Fiddle Viracola as Clara Lucia (uncredited)

Glenn R. Wilder as Driver (uncredited)

Edward Winter as Man in Hallway (uncredited)

Forrest Wood as Arthur Leary (uncredited)

Sally Yarnell as Worried Woman (uncredited)