The Prone Gunman, the film

       Jean-Patrick Manchette's The Prone Gunman is, in its film-adaptation (and, sigh, movie-tie-in reprints) no longer prone, and The Gunman - the movie, starring Sean Penn, Idris Elba, and Javier Bardem is now out.
       The critical consensus seems to be that it's a dud: see, for examples, reviews in:

• The Atlantic ("A dull, generic retread of nearly every action movie you've ever seen")
  
  
• The Independent ("This is one of [Penn's] worst films since he was selling glow-in-the-dark ties in Shanghai Surprise ")
  
  
• The Los Angeles Times ("A frustrating fiasco that kills the material and squanders its exceedingly fine cast")
  
  
• New York ("But while its heart might be in the right place, the script is -- how to put it -- awful, repeatedly conveying its points with thunderous obviousness.")
  
  
• The New York Times
  
  
• The Onion
  
  
• San Francisco Chronicle
  
  
• The Washington Post

       Maybe watch the 1975 film-adaptation of The Mad and the Bad, Folle à tuer, instead ?