AllMovie

One of two 20th Century-Fox horror melodramas released in 1942 (Dr. Renault's Secret was the second), The Undying Monster is a well-crafted variation on Universal's "Wolf Man" series. Ever since the suicide of its patriarch, the Hammonds, an old and wealthy English family has seemingly lived under a curse. When a number of murders occur on the Hammond estate, Scotland Yard inspector Bob Curtis (James Ellison) and his garrulous female assistant Christy (Heather Thatcher) are sent out to investigate. Everyone on the premises-Helga Hammond (Heather Angel), her brother Oliver (John Howard), family doctor Geoffrey Covert (Bramwell Fletcher), family servants Mr. and Mrs. Walton (Halliwell Hobbes and Eily Malyon)-seems to know more than he or she is letting on. Only in the final few minutes of the film is the horrible family secret revealed and the murderer dispensed with. Atmospherically directed by John Brahm on several impressive standing sets (that gigantic stained-glass window is a knockout!), The Undying Monster is a model "B" picture, hampered only by Heather Thatcher's intrusive comedy relief.