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)