Django Unchained buddies (well, not buddies in the film, but maybe in real life?) Jamie Foxx and Leonardo DiCaprio have both signed on to an adaptation of the forthcoming S. Craig Zahler novel Mean Business On North Ganson Street. DiCaprio will play a “disgraced detective†who gets exiled to Missouri and ends up partnering with Foxx to investigate a series of execution-style murders targeting police officers.