"The vast majority of these murders (by the Monster of Florence) could have been committed alone. Honestly, based on the type of murder—this can be said on the basis of studies conducted mainly in the United States, a country much more prolific when it comes to serial killers, unfortunately compared to our country – it is difficult for murders with such a savage sexual background and with a murder method chosen to immediately eliminate the main obstacle, i.e., the male partner in the couple, to be associated with a single murderer."