Ray Sager was a last-minute replacement for the original actor cast as Montag who dropped out of the movie right before shooting started.
Re-released theatrically under the title 'House of Torture' in 1982 as part of a multi-film package called "5 Deranged Features." Also on the bill were Shriek of the Mutilated (1974), Dracula vs. Frankenstein (1971) (under the title 'They're Coming to Get You'), Creature from Black Lake (1976) and The Corpse Grinders (1971) (under the title 'Night of the Howling Beast').
The logo on the side of the television camera is WTVO, channel 17, which is currently a television station licensed to Rockford, Illinois, United States. It is the oldest continuously operating UHF station in the northern portion of Illinois.