Mario Spezi

Mario Spezi (July 30, 1945 – September 9, 2016) was an Italian journalist and author. He wrote the non-fiction true crime book The Monster of Florence with American author Douglas Preston. Additionally, he was credited by Preston for providing details used in the novel Brimstone.

Spezi spent much of his career tracking the case of the notorious serial killer known as the Monster of Florence. He was even jailed on charges of impeding the investigation by prosecutor Giuliano Mignini, though the charges were overturned on appeal.

Later, Spezi even apologized to Amanda Knox and Raffaele Sollecito in the case of the murder of Meredith Kercher, another of Mignini's cases.

Spezi also wrote the film Il Mostro Di Firenze (1986), based on his novel. The film aired in Italy and the United States.

Spezi was a Roman Catholic.

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