Blue Ruin

Blue Ruin is a 2013 American thriller film directed by Jeremy Saulnier. The film had its world premiere at the Cannes Film Festival as part of the Directors Fortnight section on May 17, 2013, where it won the FIPRESCI Prize. Saulnier funded production on the film through a successful Kickstarter campaign, which MTV.com called the perfect example of what crowdfunding can accomplish. The film was nominated for the John Cassavetes Award at the 2015 Film Independent Spirit Awards.

After cleaning himself up, Dwight visits his sister, Sam, for the first time in years and tells her he has killed Wade. Sam is shocked but glad. As the killing has gone unreported on the news, Dwight surmises that the Clelands have decided to seek revenge without police involvement. Sam flees her home with her daughters and Dwight waits in the house for the Clelands attack. The Clelands arrive in the car Dwight left outside the club. Dwight escapes the attackers and runs over one of the Clelands, Teddy, in his car he places the unconscious Teddy in the trunk. Before Dwight drives away, one of the attackers shoots him in the leg with a crossbow.After attempting surgery on himself, Dwight has the wound treated at a hospital and returns to Sams house to clean up the mess. He tracks down an old high school friend, Ben, who lends him a rifle. On Bens land, Dwight interrogates Teddy at gunpoint. Teddy tells him that Wade was not his fathers killer it was Wades nowdeceased father, in revenge for Dwights father having an affair with Wade Sr.s wife. Teddy wrestles Dwights rifle from him, but Ben shoots him dead from a concealed position. To keep Ben from further involvement, Dwight disables Bens car. ........

Source: Wikipedia