The homages to classic science fiction and horror films extend even to the poster, which references the posters for The Day the Earth Stood Still (1951), Forbidden Planet (1956), Destination Moon (1950), House on Haunted Hill (1959), Cat-Women of the Moon (1953), and Earth vs. the Flying Saucers (1956).
While most of the actors were experienced, some even having lots of credits on stage and film, they had to work hard to give an honest B movie performance.
This film was shot in ten and half days in and around the L.A. area.
To mimic the classic B&W look, they filmed in color using a miniDV camera and stripped the color in postproduction.
Sam Robards was originally to have played Kro-bar but had to drop out in order to appear in Artificial Intelligence: AI (2001).
Filmed in "Skeletorama", a tribute to '50s horror movies.
Most of the props were purchased on eBay. Others were inexpensive props made of household items like toilet paper tubes, candle holders and caulk guns. A number of props were obtained by looking around the cabin in which part of the film was shot, including the mashed potatoes the cast are seen eating.
Director Larry Blamire not only plays Paul Armstrong, but is also the uncredited voice of the Skeleton. This information should be in the cast list, but someone has prematurely put a lock on that so it does not show up.
The words "scream gem" in the trailer's tagline "It's another scream gem from the company that brought you Zombies of Mora Tau and Lawrence of Arabia" refers to the Columbia Pictures subsidiary Screen Gems, the television distribution arm of Columbia Pictures. Notable for first bringing the classic Universal horror films, and the Three Stooges shorts to television to be admired by the baby boomers of the 1950's, the company would soon be recognized by it's TV sitcoms like Bewitched, I Dream Of Jeannie, and The Partridge Family. In 1974 Screen Gems changed it's name to Columbia Pictures Television, retiring the Screen Gems name. Columbia Pictures resurrected the Screen Gems name for it's lower budgeted, genre film releases, beginning with the film Arlington Road, released in 1999.
The "atmosphereum detector" that Dr. Armstrong uses is actually an analog multimeter made by The Precision Apparatus Company (Glendale, Long Island, NY).
Principal filming was done at Bronson Canyon, which was also used in filming many movies to which 'Cadavra' paid homage (the site permit was the single largest expense in the film's entire budget). Among the 50s science fiction and horror films shot at Bronson Canyon are: Attack of the Crab Monsters (1957) , Invasion of the Body Snatchers (1956), The Spider (1958), It Conquered the World (1956), The Brain from Planet Arous (1957), King Dinosaur (1955), Invisible Invaders (1959), Night of the Blood Beast (1958), The Return of Dracula (1958), Robot Monster (1953), Teenage Cave Man (1958), and Teenagers from Outer Space (1959). The canyon gained additional fame from Batman (1966) for the 'exit' of the Bat Cave (which was actually used in filming 'Cadavra').
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