It was a student orientation like no other when American ballet student Suzy Bannion (Jessica Harper) landed on the doorstep of a prestigious dance academy in a small German town and promptly witnessed another student fleeing in terror.  As Suzy observes the other unholy goings-on, she comes to realize the school is home to modern-day witches who seek to resurrect their coven’s long-dead founder.  Italian scaremaster Dario Argento’s magnum opus co-stars Alida Valli, Joan Bennett, Stefania Casini, Udo Kier.

“What lingers is not a sense of evil but exhilaration in how far Argento and his fellow filmmakers were willing to go to shock and delight; the movie’s sheer exuberance is the cinematic equivalent of a blood transfusion.”  – Adam Nayman, The Ringer

“His sixth feature film and perhaps his masterpiece, strategically moves away from the typical stories of the giallo without separating a millimeter from his visual and stylistic drives”. – Ernesto Diezmartinez, Letras Libres