Bruno Fischer was the author of 25 novels and more than 300 short stories, a contributor to "Black Mask" and "Manhunt" magazines, and the uncrowned king of the notorious 'weird menace' pulps. He wrote also as Russell Gray and Harrison Storm.
Good Bruno Fischer but not great. The fact that this GM title was only printed once should have been a tip-off. It's not in the same league as The Lady Kills or House of Flesh, which were reprinted numerous times.