On screen
Cast
45 credited performers
Gregory Peck
David Stillwell
Diane Baker
Shela
Walter Matthau
Ted Caselle
Robert H. Harris
Dr. Broden
Kevin McCarthy
Sylvester Josephson
Leif Erickson
The Major
Walter Abel
Charles Stewart Calvin
George Kennedy
Willard
Jack Weston
Lester
Anne Seymour
Frances Calvin
House Jameson
Bo
Hari Rhodes
Lt. Franken
Syl Lamont
Benny
Eileen Baral
Irene
Neil Fitzgerald
Joe Turtle
Franklin Cover
Group Leader
Don Anderson
Character not listed
Bill Baldwin
Character not listed
Al Beaudine
Character not listed
Roxane Berard
Character not listed
Robert Brubaker
Character not listed
Toni Covington
Character not listed
John Crowther
Character not listed
Robert Dahdah
Character not listed
Ann Doran
Tenant in Apartment 3R (uncredited)
Jerry Dunphy
Character not listed
Douglas Evans
Character not listed
Harry Fleer
Character not listed
Rian Garrick
Character not listed
Gerald Gordon
Character not listed
Damian O'Flynn
Bar Patron (uncredited)
John Pedrini
Character not listed
Barbara Perry
Office worker (uncredited)
Murray Pollack
Detective (uncredited)
Bill Quinn
Eddie - Bartender (uncredited)
Allan Ray
Character not listed
Walter Reed
Reporter (uncredited)
Victor Romito
Character not listed
George Simmons
Character not listed
Ann Staunton
Character not listed
Bert Stevens
Character not listed
Robert Swan
Police Sergeant (uncredited)
Aline Towne
Dr. Broden's Receptionist (uncredited)
Howard Wendell
Character not listed
Myron Healey
Bar Patron Discussing Watermelon (voice) (uncredited)