The murders followed a chillingly consistent pattern. The victims were typically couples in parked cars, attacked during the dark of a new moon.
The investigation was a "labyrinth of fear" involving over 100,000 investigated men. Eventually, the focus shifted to a group of local outcasts known as the :
The “Monster of Florence” and the Trial(s) of Pietro Pacciani
Ballistics linked the killings through a single .22 caliber Beretta pistol using rare Winchester "Series H" bullets.