Looking to prove their widely decried theories on cryogenics, researchers Dexter (Bela Lugosi) and Gilmore (John Carradine) returned from the Arctic with the frozen form of a caveman (Frank Moran)... and succeeded in reviving him. With the primitive's capacity for reason gone, however, Dexter concluded that a brain transplant would be a proper fix... and that the donor's willingness wouldn't be an issue. Second-bill shockfest from Monogram co-stars Teala Loring, Tod Andrews; George Zucco, despite having bowed out, still got billing! 60 min. Standard; Soundtrack: English Dolby Digital mono.