Stefano Sollima on Tackling Italy’s Unsolved Sex Murders in Venice-Premiering Netflix Series ‘The Monster of Florence’: It’s an ‘Investigation of Man and How He Is a Bearer of Evil’

Italian genre specialist Stefano Sollima — best known for the gritty TV hit “Gomorrah” and movies such as “Sicario: Day of the Soldado” and “Without Remorse” — spent more than a year researching the still unsolved case at the heart of his new Netflix series “The Monster of Florence,” premiering on Thursday at Venice Film Festival.

The show’s title is the moniker given to the alleged serial killer, who committed eight double murders over the course of 17 years from the late 1960s to the mid-’80s, preying on couples parked in cars in secluded places around Florence. “The Monster” always used the same weapon,…