La Balance (U.S. title: The Nark; literal translation : The Informer) is a 1982 French film directed by Bob Swaim.

It stars Nathalie Baye, Philippe Léotard, Tchéky Karyo, Maurice Ronet and Jean-Paul Comart.

Her former racketeer boyfriend and pimp, Dédé, has been excluded from the business of a local mob boss, Roger Massina, because of a romantic dispute over Nicole.

But Massina doesn't trust Dédé entirely, so he replaces him at the last minute with his semi-psychotic, gun-happy henchman, Petrovic.

But Nicole, his girlfriend, fearing for Dédé's life, deliberately turns him in to the police, who arrest him, on the assumption that he's safer in jail than on the streets.