Originally planned for television, the film was made as a nearly two hour piece split into four parts each of which would end with a murder scene.

Musician Bruno is hired to compose soundtrack for an upcoming horror film, renting the villa where the movie is set for a few weeks to help his inspiration.

Bruno is told before Tony owned the property, a woman named Linda leased out the villa, but she's since disappeared after moving out and never been heard from again.

The attacker finds her and jams the box cutter through the mesh, eventually slashing Katia's stomach and throat, causing her bleed to death.

Not noticing Katia right at his feet, Bruno heads back inside, where he finds blood on his pants and receives a silent phone call.

Katia's roommate Angela arrives, saying the two women were both models and Linda let then go swimming in her pool, which Bruno graciously welcomes as well.

She can't answer many questions about Linda, who apparently returns, as a figure in heels, a sweater and skirt, and red nail polish watches Angela in the changing room.

When Giovanni discovers Katia and Angela dead inside a tank, Linda bludgeons him to death with his own wrench.

Linda traps Giulia in the house by closing the garage door, taunting her with threats, messing with the lights, and dropping a ton of tennis balls from the ceiling.

Bruno talks with a crew member, revealing Tony was too insecure and childlike inside to stave off Linda, his alter-ego, so he murdered other women out of rage and to prove he was a man.

The final reel put back together reveals the boy in the basement, a young Tony, leaving with a skirt and a wig with pigtails.

[3] Bava and Sacchetti recalled that their collaboration was difficult, with the two being more friendly during the production of A Bay of Blood (1971), but their approach to this film was at odds with each other.

[3] The film was initially commissioned to be made for Italian television by producer Mino Loy and have been aired in four 30 minute segments.

[9] Vinegar Syndrome released it on UHD in 2023 Robert Firsching of AllMovie gave the film a mixed review, writing, "Lamberto Bava eschews complex mystery in favor of elaborate stalk-and-slash sequences, with only partial success".