Michael Jacob and Daniela De Gregorio write together as Michael Gregorio. Daniela teaches philosophy; Michael is interested in the history of photography. They live in Spoleto, a small town in central Italy.
They have created a series of crime novels whose central charater is the Prussian magistrate, Hanno Stiffeniis. The series includes Critique of Criminal Reason, Days of Atonement, A Visible Darkness and Unholy Awakening.
Author's Website: https://www.michaelgregorio.it/
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