Luster (movie, 2010)

Thomas Luster is a troubled businessman who tries to make sense of a life being driven out-of-control by a force closer to home than he first realizes. When he discovers that the man working against him is another side of his own personality he is forced to fight back against his manipulative alter-ego as murder, madness and mayhem combine to take Luster on the most bizarre and terrifying ride of his life.