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.
Donald Blake
Madeline Howard
Lt. Mike Stevens
Jimmy Flanders
Sylvia Lockwood
Nurse Molly Riordan
Sgt. Eddie Daniels
Prof. Gilbert Howard
Dr. Oliver Cole
Tom Edwards - Forest Ranger
Townsend - Night Watchman
Sgt. Powell
Donald as a Monster
Student
Student
