Cadavres (2009)

One Halloween, the alcoholic mother of good-for-nothing Raymond suddenly dies, and he throws her body in a ditch. Repenting, he calls his sister Angelie, an actress who he has not seen for ten years, to help find the corpse. But the corpse they bring back in the ruined family home is not that of their mother. The brother and the sister start a sinister adventure involving two gangsters in dire straits, two chilling dealers, a dishonest artist agent, a terribly stupid cop, and a horde of pigs.