The novels in the "I B" series are:
" (The Bastards of Pizzofalcone) series is a gritty police procedural set in modern-day Naples. It follows a group of "misfit" detectives who are brought together to replace a corrupt unit at the Pizzofalcone precinct. Torrent Maurizio De Giovanni I B
The presence of "I B" suggests the seeker wants an Italian language edition, likely the first or second volume of a collection. The novels in the "I B" series are: