Dr. James Xavier
Ray Milland
Dr. Diane Fairfax
Diana Van der Vlis
Crane
Don Rickles
Dr. Sam Brant
Harold J. Stone
Dr. Willard Benson
John Hoyt
Foundation Head
Morris Ankrum
John Trask (uncredited)
Dick Miller
Mr. Bowhead
Morris Ankrum
Heckler (uncredited)
Jonathan Haze
Party Dancer
Lorie Summers
Mrs. Hart (uncredited)
Kathryn Hart
Preacher (uncredited)
John Dierkes
Preacher
John Dierkes
Nurse (uncredited)
Barboura Morris
Young Girl Patient
Vickie Lee
Nurse with Young Patient
Barbara Morris