Here's the trailer for writer/director Martin McDonagh's violent action comedy, Seven Psychopaths, which will premiere as a Midnight Madness selection at the Toronto International Film Festival, next month, before it opens threatically on October 12.

The film stars Colin Farrell, Christopher Walken, Sam Rockwell, Woody Harrelson Olga Kurylenko, Abbie Cornish and Sidibe, and centers around a struggling screenwriter (Farrell) who gets caught up to his thick eyebrows, when two friends of his (Rockwell and Walken) kidnap a dog, owned by a violent gangster (Harrelson).

Evidently, from the trailer, Sidibe plays Harrelson's dogsitter, but it's not clear how much she's involved in the plot, or how big her part is.

But here's the trailer for your amusement.