Gregory Peck character David Stillwell
Diane Baker character Shela
Walter Matthau character Ted Caselle
Kevin McCarthy character Sylvester Josephson
Jack Weston character Lester
Leif Erickson character The Major
Walter Abel character Charles Stewart Calvin
George Kennedy character Willard
Robert H. Harris character Dr. Broden
Anne Seymour character Frances Calvin
House Jameson character Bo
Hari Rhodes character Lt. Franken
Syl Lamont character Benny
Eileen Baral character Irene
Neil Fitzgerald character Joe Turtle
Franklin Cover character Group Leader
