Jeffrey Hunter as Jim Grayam

Anne Francis as Lorrie Benson

Dana Andrews as Cort Benson

Viveca Lindfors as Dr. Elizabeth Larstadt

Stacy Harris as Josh Reynolds

Kathie Browne as Angie DeWitt

Phillip Pine as Dr. Ames

Michael Pate as Dr. Mills

Robert McQueeney as Sgt. Dawes

Strother Martin as Mr. Clyde

Joan Swift as Clara

George Pelling as Butler

Victoria Paige Meyerink as Julie Benson

Stephen Roberts as Judge

Pat Cardi as Bobby

Leon Alton as Spectator (uncredited)

Tom Anfinsen as Party Guest (uncredited)

David Armstrong as Party Guest (uncredited)

Frank Baker as Executive (uncredited)

Harry Bartell as Detective (uncredited)

Suzanne Benoit as Nurse (uncredited)

Gary Bohn as Bailiff (uncredited)

Steve Carruthers as Executive (uncredited)

James J. Casino as Party Guest (uncredited)

Donald Chaffin as Orderly (uncredited)

William Conrad as Mental Patient (uncredited)

Roberto Contreras as Asylum Inmate (uncredited)

Isabel Cooley as Nurse (uncredited)

George DeNormand as Attorney (uncredited)

Barbara Dodd as Party Guest (uncredited)

William Duffy as Orderly (uncredited)

Biff Elliot as Detective (uncredited)

Joe Evans as Inmate (uncredited)

Pamelyn Ferdin as Little Girl in Lobby (uncredited)

Fred Fisher as Party Guest (uncredited)

Duke Fishman as Inmate (uncredited)

Jimmie Horan as Party Guest (uncredited)

Steve Ihnat as Dr. Copeland (uncredited)

Byron Keith as Guard (uncredited)

Kenner G. Kemp as Courtroom Spectator (uncredited)

Johnny Kern as Party Guest (uncredited)

Richard Kiel as Asylum Inmate (uncredited)

Lloyd Kino as Mr. Komato (uncredited)

Robert Locke Lorraine as Party Guest (uncredited)

Elaine Martone as Party Guest (uncredited)

Charles Maxwell as Insane Man in Courtroom (uncredited)

William Meader as Party Guest (uncredited)

Joseph Mell as Insane Inmate with Flowers (uncredited)

John Mitchum as Guitar-Playing Inmate (uncredited)

Ray Montgomery as Charlie the Gate Guard (uncredited)

George N. Neise as Party Guest (uncredited)

Monty O'Grady as Executive (uncredited)

James O'Hara as Party Guest (uncredited)

Bill Quinn as Psychiatrist at Sanity Hearing (uncredited)

Paul Ravel as Inmate (uncredited)

Anthony Redondo as Reporter (uncredited)

Victor Rodman as Asylum Inmate (uncredited)

John Roy as Spectator (uncredited)

Wendy Russell as Party Guest (uncredited)

Jeffrey Sayre as Lawyer (uncredited)

James Seay as Judge at Scavenger Hunt (uncredited)

Alfred Shelly as Detective (uncredited)

Hal Taggart as Man at Sanity Hearing (uncredited)

Julie Van Zandt as Mother (uncredited)

Maurice Wells as Judge (uncredited)