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Netflix Debuts El Monstruo de Florencia, a Four-Part Drama of Italy’s Unsolved Serial Murders

The series reframes the case through competing theories, inviting judgment rather than delivering a solved mystery.

Overview

  • The miniseries premiered worldwide on Netflix on October 22, 2025.
  • Created by Leonardo Fasoli and Stefano Sollima, the Italian production runs four episodes of roughly 54 minutes each and stars Marco Bullitta, Valentino Mannias and Francesca Olia.
  • It revisits eight double homicides around Florence between 1968 and 1985, a real case long defined by fear, contradictory leads and alleged judicial errors.
  • The narrative presents parallel lines of inquiry, including the debated Sardinian track and other hypotheses, and leaves conclusions to viewers.
  • Rather than a sleuth-led tale, the drama centers on alleged perpetrators and explores the social climate of 1970s–80s Italy.