Charles Campbell
Grant Williams
Terry Ames
Shirley Knight
Belmont
Jackie Searl
Man Demonstrating Novelty Toys
Hal Smith
Boy Watching Toy Demonstration
Ronnie Dapo
Edna (uncredited)
Julie Van Zandt
Bobby (uncredited)
Tim Rooney
Dr. W.L. Janz, M.D.
Onslow Stevens
Dr. David Lindsay
William Leslie
Mrs. Quimby
Hope Summers
Jean Quimby
Anne Helm
Hollingsworth
Harold Gould
Lt. Kritzman
Simon Scott
Sgt. Bonner
Michael Bachus
District Attorney
Harry Holcombe
Story
Blake Edwards
Screenplay
Robert Bloch
Director
Owen Crump
Producer