http://www.imdb.com/title/tt0093090/?ref_=fn_tt_tt_1
* Most of composer Piero Montanari's other credits are on porn movies, many of them directed by Ghosthouse producer Joe D' Amato. One of them is entitled "Anal Paprika," and he is credited for his work on this film under the pseudonym "John Mountain."
http://www.imdb.com/name/nm0598951/?ref_=ttfc_fc_cr6
* It was renamed "La Casa 3" in Italy because "La Casa" and "La Casa 2" were the Italian titles of Evil Dead 1 and 2.
* There's a pretty much in-name-only Ghosthouse 2 (aka "Witchery"/"La Casa 4") featuring Linda Blair and David Hasselhoff:
http://www.imdb.com/title/tt0096453/
* The cinematographer's brother shot highly regarded films for, among others, Sergio Leone, Pier Paolo Pasolini, Federico Fellini, and Roman Polanski:
http://www.imdb.com/name/nm0005686/?ref_=fn_nm_nm_1
* Ghosthouse was shot in the same house as an earlier horror film, Lucio Fulci's The House by the Cemetery.
http://www.imdb.com/title/tt0082966/