The front facade of the insane asylum is actually Culver Studios in Culver City, California. Culver Studios is the former home of Thomas H. Ince Studios, RKO Radio Pictures and Desilu Productions.
It took writer/director Gary Graver about three weeks to make this film because he shot it in its entirety at night from 6:00 PM to 12:00 midnight.
The film had a $55,000 budget. Writer/director Gary Graver put up $30,000 of his own money and he got investors and a distributor to contribute an additional $25,000.
Posters/covers of these films can be seen in the movie: "Dracula vs Frankenstein", "I Was a Teenage Werewolf", "Howling" and "Maniac".