Often hailed as Netflix's scariest movie ever by horror fans, 2017's Spanish-language Verónica is getting a prequel. Set in 1991 Madrid, Spain, Verónica follows a 15-year-old girl (Sandra Escacena) who is forced to protect her younger siblings from a malicious entity after a séance using a Ouija board goes terribly wrong.Verónica is loosely based on the true story of Estefania Gutierrez Lazaro, a Spanish teenager who died mysteriously in 1992 after using a Ouija board. After six months of suffering from seizures and hallucinations, Estefania died in the hospital; police were never able to crack the case and her death remains unexplained to this day.This morning, Netflix España shared three first-look images at a prequel to the supernatural horror, titled Sister Death (Spanish: Hermana Muerte). Directed by Paco Plaza (co-director of [REC]), the prequel centers on "Sister Death," the blind, elderly nun played by Consuelo Trujillo in Verónica. Trujillo will return for the prequel; Aria Bedmar, Almudena Amor, and Maru Valdivielso will also star.

In a tweet that reads "This convent is already in mourning: filming has finished for #HermanaMuerte, the movie directed by @paco_plaza that is going to terrify us...and here we have new photos to make you start shaking," the official Netflix España Twitter account shared a still from the upcoming film, as well as two exclusive behind-the-scene pics. Check out the hi-res photos below.

Sister Death Will Follow Origins of Elderly Nun from Verónica

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Bloody Disgusting shared the official synopsis for Sister Death from Spanish news site TerrorActo:

"In post-war Spain, Narcisa (Bedmar), a novice with supernatural powers, arrives at an old convent converted into a girls' school to become a teacher. As the days go by, strange events and the increasingly disturbing situations that torment her will end up leading her to unravel the terrible skein of secrets that surround the convent and lie in wait for its inhabitants."There's no word on a release date for Sister Death yet, but fans can expect a release date and official trailer soon.

While you wait, you can check out Paco Plaza's terrifying work right now with Verónica, streaming on Netflix.