
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