Fresh off his retirement from the WWE, Dave Bautista is attached to star in the action-thriller Killer's Game for STXfilms, Collider has exclusively learned. DJ Caruso (Disturbia) will direct the film, which is based on the book The Killer's Game by Jay Bonansinga. Endurance Media's Steve Richards will produce with Andrew Lazar of Mad Chance. Killer's Game follows a veteran hitman named Joe Flood who is informed by his doctor that he has only a few months to live, so he puts out an open contract on his own life, only to discover that the …