Lon Chaney has no spoken lines in this movie following the opening scene in his prison cell. Copyright 1955.
Chaney reportedly asked director Pollexfen not to make any dialogue changes or additions after the lunch break, when he usually drank heavily.
Lt. Chasen mentions putting in a call to a Professor Dwiggins at Caltech who may know about Professor Bradshaw's work. Sue Dwiggins is the real name of co-writer Sue Bradford.
Released on a double bill with "Invasion of the Body Snatchers" (1956)