A military policeman from Florence Davide Canella has written a book on the case. He is now a private detective. He was even hired by the Vinci family in an unrelated case. Guys, the Monster is “Carlo” or Antonio Vinci. A pharmacist in 85’ remembers that a young man, very tall walks in, a day after every murder and buys alcohol used for body part preservation. He follows him and notices his car is full of newspapers about monster’s crimes. He writes down the plate number. It’s Antonio. The rest of the book fleshes out what Douglas and Mario have proposed. Absolutely fascinating info about Vinci Family from somebody who knows them intimately. Also of the falsely accused Pacciani. Unfortunately it is only in Italian. So case closed. Literally the two books leave no doubt what so ever.