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