The Killing Jar (film)

The Killing Jar is a 2010 American crime thriller film written and directed by Mark Young. It stars Michael Madsen as a psychopath who takes the occupants of a remote diner hostage, only to realize that one of them is more dangerous than the gunman.

When Lonnie questions him, the man becomes antagonistic and belittles Lonnie, who pulls his gun on the man. Lonnie sheepishly apologizes when Hank reports the mans vehicle does not match the police reports. As the patrons relax, the man leaves the diner, only to return with a shotgun and pistol. After he kills Lonnie and Jimmy, he takes the rest of the diner hostage. He orders Noreen to collect all the wallets and cell phones, and he forces Hank to dispose of the corpses. The gunman catches Noreen trying to sneak a cell phone, and threatens to kill her if she does it again. Hank quietly proposes that they rush the gunman, as he has used up several rounds already, but Noreen and John refuse. The lovers, frightened, huddle at another table.A new customer enters the diner, introduces himself as Mr. Greene, and seems minimally surprised by the situation. He hands the gunman a suitcase full of money and addresses him as Smith. When Greene attempts to leave, the gunman takes him hostage and demands answers. After being severely beaten, Greene eventually reveals that he is a corrupt land developer who hired a professional hit man to kill the neighboring family when they refused to sell their land to build a shopping mall. With no heirs to the familys life insurance policy, Greene would buy the land from the bank. ........

Source: Wikipedia