Not Rated | | Comedy, Horror
During the climax as he's struggling with Mary Mitchel, Sid Haig had the flu and a temperature of 103°. The producers employed a doctor to standby on the set to give Haig an injection every few hours so he could continue to work.
Spiders don't eat other spiders.
Virginia: Cannibal spiders do.
The architecture of the Merrye house makes no logical sense; the actual layout of the rooms and floors as they relate to each other is impossible, something director Jack Hill later admitted.
As the film ends, "THE END" appears on the screen, then suddenly changes to "THE END ?".
2007 Director's Cut runs 84 minutes and includes one extended scene in which Bruno reveals more about the Merrye family and Schlocker reveals his intentions for the Merrye estate.