Horror Sci-Fi
A college paleontology professor acquires a newly discovered specimen of a coelacanth, but while examining it, he is accidentally exposed to its blood, and finds himself periodically turning into a murderous Neanderthal man.
Directed by
Jack Arnold
Written by
David Duncan
Joanna Moore
Madeline Howard
Troy Donahue
Jimmy Flanders
Arthur Franz
Donald Blake
Ross Elliott
Sgt. Eddie Daniels
Whit Bissell
Dr. Oliver Cole
Judson Pratt
Lt. Mike Stevens
Helen Westcott
Nurse Molly Riordan
Hank Patterson
Townsend - Night Watchman
Eddie Parker
Donald as a Monster
Alexander Lockwood
Prof. Gilbert Howard
Richard H. Cutting
Tom Edwards - Forest Ranger
Nancy Walters
Sylvia Lockwood
Phil Harvey
Sgt. Powell
Anne Anderson
Student

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