Gianrico Carofiglio, born in 1961, was an anti-Mafia prosecutor in the southern Italian city of Bari for many years. He has been responsible for some of the most important indictments in the region involving organized crime, corruption and the traffic in human beings. He is now a Member of the Italian Senate. Involuntary Witness was his debut novel and the first in a series with defence lawyer Guido Guerrieri. It won numerous literary prizes and sold over a million copies. It has been translated into eleven languages.