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

Bill Baldwin

Al Beaudine

Roxane Berard

Robert Brubaker

Toni Covington

John Crowther

Robert Dahdah

Ann Doran

Jerry Dunphy

Douglas Evans

Harry Fleer

Rian Garrick

Gerald Gordon

Damian O'Flynn

John Pedrini

Barbara Perry

Murray Pollack

Bill Quinn

Allan Ray

Walter Reed

Victor Romito

George Simmons

Ann Staunton

Bert Stevens

Robert Swan

Aline Towne

Howard Wendell

Edward Dmytryk

Director

Ted J. Kent

Editor

Joseph MacDonald

Director of Photography

Peter Stone

Screenplay

Howard Fast

Novel

Harry Keller

Producer

Buddy Van Horn

Stunts

Quincy Jones

Original Music Composer

Frank Arrigo

Art Direction

Alexander Golitzen

Art Direction

John P. Austin

Set Decoration

John McCarthy Jr.

Set Decoration

Jean Louis

Costume Design

Larry Germain

Hairstylist

Bud Westmore

Makeup Artist