Il Boss (En. The Boss, also known as Murder Inferno) is a poliziottesco-noir film written and directed by Fernando Di Leo in 1973. It is the final part of Di Leo's Milieu Trilogy, also consisting of Milano calibro 9 and La mala ordina, both released in 1972.
Nick Lanzetta (Henry Silva) takes out several members of a rival crime family for his boss Don Corrasco (Richard Conte). The enemy clan attempts retribution by kidnapping an associate's daughter, who turns out to be a nymphomaniac. A violent power struggle within the Mafia ensues.
Il Boss was released in Italy on 1 February 1973, where it was distributed by Alherat. The film grossed a total of â¤774.172 million Italian lira on its release.