Scary to the highest level! This horror film from the '70s just proves to show that horror film makers on that era have the chops when it comes to scaring viewers out of their wits!  This giallo is also a sort of mystery who-dunnit type of film that will leave viewers stunned, confused and guessing during its entirety. Commendable portrayals by Florinda Bolkan, Barbara Bouchet and Tomas Milian, they are considered as some of the suspects of this murder-myster-horror flick that's well-written and with great use of lighting techniques. Director Lucio Fulci is indeed a class of his own where it concerns giallo flicks, worth checking out!