Credits
Cast
Arthur Franz
Donald Blake
Joanna Moore
Madeline Howard
Judson Pratt
Lt. Mike Stevens
Troy Donahue
Jimmy Flanders
Nancy Walters
Sylvia Lockwood
Helen Westcott
Nurse Molly Riordan
Ross Elliott
Sgt. Eddie Daniels
Alexander Lockwood
Prof. Gilbert Howard
Whit Bissell
Dr. Oliver Cole
Richard H. Cutting
Tom Edwards - Forest Ranger
Hank Patterson
Townsend - Night Watchman
Phil Harvey
Sgt. Powell
Eddie Parker
Donald as a Monster
Ronnie Rondell Jr.
Student
Anne Anderson
Student
Art
Alexander Golitzen
Art Direction
Camera
Russell Metty
Director of Photography
Costume & Make-Up
Bud Westmore
Makeup Artist
Directing
Jack Arnold
Director
Editing
Ted J. Kent
Editor
Production
Joseph Gershenson
Producer
Visual Effects
Jack Kevan
Creature Design
Clifford Stine
Visual Effects
Writing
David Duncan
Writer