Soundtrack features Adrian Celentano's "Furore," which is also featured on "The Girl Who Knew Too Much" soundtrack
Soundtrack features "La Coda Dello Scorpione" from the "The Case of the Scorpion's Tail"
Soundtrack features "Un Uomo Si E'Dimeso" from "Black Belly of the Tarantula"
Soundtrack features "La Polizia Sta a Guadaos" and "La Polizia Chiede Aiuto" from "What Have They Done to Your Daughters"
Soundtrack features "La Polizia Ha Le Mani" from "Killer Cop"
Certain shots, lighting & sound effects are homage to Suspiria
Some of the extreme close-up shots are a reference to this film