Netflix has unveiled a trailer for their new limited series, The Monster of Florence, which explores the true story of Italy’s first serial killer, based on direct testimonies and court documents.

Here’s the synopsis:

Eight double murders. 17 years of terror. Always the same weapon: a .22 caliber Beretta. In Italy, a faceless serial killer sows panic, sparking one of the longest and most complex investigations ever.

Created by writer-director Stefano Sollima (Sicario: Day of the Soldado) and writer Leonardo Fasoli (“Gomorrah”), the show is produced by Sollima and Lorenzo Mieli (Bones and All).

Marco Bullitta, Valentino Mannias, Francesca Olia, Liliana Bottone, Giacomo Fadda, Antonio Tintis, and Giordano Mannu star.

The four-part limited series premieres October 22 on Netflix.