- HD 1080
- Runtime: 90m.
- Status: Released
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- Languages: it
- Country: Italy, United States of America, Yugoslavia
- Director: Lucio Fulci
- Stars: Jared Martin, Lara Lamberti, Ulli Reinthaler, Sophie d'Aulan, Jennifer Naud
- keywords: possession, revenge, giallo
- Production_studio: Sutjeska Film, A.M. Trading International S.r.l., Imperial Entertainment
- Slogan: They made a clown out of Kathy once too often!
- providers: AMC+ Amazon Channel, Shudder, Screambox, Night Flight Plus, Shudder Amazon Channel, Screambox Amazon Channel, Midnight Pulp, Full Moon Amazon Channel, Shudder Apple TV Channel, Troma NOW
- The Ænigma is featured in the top rankings of 1987
- #61 in Top Horror Movies of 1987
The spirit of a comatose teenage girl possesses the body of a newcomer to her girls' boarding school in order to enact bloody revenge against the elitist, lingerie-clad coeds responsible for her condition.