Colin Farrell portrays “Marty,” who has a screenplay concept but only a title to show for it. He's typically hungover, and is talking with his friend “Billy” (Sam Rockwell), who generates lots of ideas for his disturbing characters yet doesn't want to bother his creatively blocked companion. Besides having a lively imagination, “Billy” is also participating in a clever scheme alongside the tie-wearing “Hans” (Christopher Walken) that involves stealing expensive schnauzers! Yes, they kidnap dogs. Things get interesting when “Billy” shows up at “Marty’s” house with an immaculately groomed Shih Zhu and they embark on a risky journey into the desert, which might potentially spark something for him. It could be inspiration, but it's probably more likely anxiety since the dog’s owner is the unpleasant criminal "Charlie" (Woody Harrelson), who wants his dog back—and perhaps with some extra weight to feed it. They have a wealth of ideas for his book now, but can they survive long enough to profit from them? This is my preferred performance from the actor known from “Ballykissangel,” because he appears well and authentic, and interacts exceptionally well with Rockwell, who has impeccable comedic timing; along with the stylish and cunning Walken, and Harrelson, who amusingly blends false politeness with shotgun threats. The narrative unfolds in a series of connected segments, which allows for numerous instances of violence, gunfire, and adventures as we approach an ending that is far from anticipated. Martin McDonagh understands how to blend thriller elements with comedy, and he also achieves some remarkable group performances from his cast, who playfully mock the genre while remaining completely absorbed in its extremes.

Source on TMDB