“He came up with a perfect plan.”
written by Charlotte Cicero & Guido Togliatti
This blog feature is an exclusive bonus installment to our Spring issue of Blending Magazine. After you finish reading, be sure to explore the rest of the magazine online—just follow this link to download the full Spring 2025 edition:
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Beneath the romantic cobblestones and rolling hills of Florence, Italy, lies one of the most disturbing true crime stories in European history. Between 1968 and 1985, a series of gruesome double homicides occurred in the Tuscan countryside. Il Mostro di Firenze—The Monster of Florence—created a legacy of terror, controversy, and conspiracy, and a decades-long series of unanswered questions.
A Pattern of Death
The first known crime occurred in 1968, though it wasn’t immediately linked to the rest. It wasn’t until a similar attack in 1974 that authorities began to suspect a serial killer might be at large. For 17 years, the murders continued. As media speculation and fear grew, so did the number of victims.
Il Mostro di Firenze sought out young couples seeking privacy in rural areas and often attacked while the couples were in their cars. Throughout the serial murders, the weapon used was consistently the same—a .22 caliber Beretta pistol. The ritualistic elements in these murders pointed toward a deranged but highly meticulous criminal at work.
Insights from Florence
To better understand the grip this case holds on Florence, we spoke with Fabio Binarelli, a native of Tuscany and professor at The American University of Florence, who offered personal insight into the murders and their legacy.
Binarelli noted that the killings followed a consistent pattern: the male victim was shot first, followed by the female, who was also often physically mutilated—most often targeting the breast or pelvic region. “That’s what made it feel truly serial,” Binarelli explained.
The investigation was very complicated. Binarelli explained, “Today everything is on your laptop—but back then, to connect several files of investigation, you had to have one clever investigator who connected places and years with the details.”
Eventually, suspicion fell on Pietro Pacciani, a violent Tuscan farmer with a disturbing history. “The investigation narrowed down to one person specifically and his close circle of friends,” Binarelli told us. Pacciani had once killed another man out of jealousy and had been known for abusing his wife and daughters. While Pacciani was convicted in 1994, his sentence was overturned in 1996 due to insufficient evidence.
Adding to the surreal nature of the case, Pacciani created works of art that disturbed the people around him. “Despite being almost illiterate, he had an interesting collection of drawings, and if you see them, they give you chills…” He also wrote poems and read one about brotherhood and love to the court during his trial. “Imagine that,” Binarelli said. “You’re in front of the Supreme Court, answering for eight double murders, and you’re reciting poetry. Something … it’s off.”
Fear, Conspiracy, and Cultural Reflection
The atmosphere in Florence during the years of the murders was palpable. Locals avoided the countryside, and couples were terrified to go out at night. Conspiracy theories flourished—some claiming that Pacciani was merely a pawn for a secret society involved in ritual killings.
Binarelli elaborated, “It was a great opportunity for fictional writers and journalists – they have many conspiracy theories now.”
American crime writer Douglas Preston famously got caught up in the case while researching in Florence. His book, The Monster of Florence, helped revive international interest, including a speculative link to the Zodiac Killer. Though no solid evidence ever backed this connection, the eerie similarities between the two killers only fueled the fire.
A Lasting Legacy
Beyond the crimes, the case peeled back layers of Tuscany’s cultural identity. “You have the judges: educated Florentines on one side, and on the other, Pietro and his friends, uneducated, rude, and when they were interrogated, they exposed the truths of their places.”
He continued, “Florence is sort of the light in the dark for human civilization. It’s interesting to see this inner struggle in the person of Piaccani, he was a brutal, violent person, a beast, but a beast with creative thoughts. That made him the perfect serial killer.”
Today, the Monster of Florence case remains officially unsolved. An upcoming Netflix docuseries has reignited interest and is set to be available this coming Fall. However, Binarelli says he’s weary about its historical accuracy: “If it’s only four episodes, that’s a lot to cram. I appreciate the artistic reenactment of things, but sometimes they are inaccurate or culturally distant.”
Most of the tourists who come to Florence for its beauty, art, and history will never know the story that took place in the rolling hills above town. The legacy of Il Mostro di Firenze is a chilling reminder that even the most beautiful places can be harbors of darkness.