According to director Bruno Mattei, the convent the movie was shot in (the "Convento di Santa Priscilla" in Rome) was back then owned by FIAT, but belongs now to the Secret Service.
Goblin did not compose any new music for this film. The film simply reuses three tracks from the Goblin albums Roller (1976) and ll Fantastico Viaggio del "Bagarozzo" Mark (1978)
Deleted Scene: In the movie trailer for "The Other Hell" there's a deleted scene where Father Inardo talks to an unknown old woman laying in a bed. There is also an unknown man standing to the left of the bed. Both the old woman and the man standing next to the bed aren't shown anywhere in the movie.