The Fugitive (1963)

After getting into a car accident in a rural Kentucky town, Kimble lands in jail by the redneck sheriff who hates outsiders. But Kimble manages to escape with his cellmate Davey ""Fatso"" Lambert. Hiding out at the Lambert ranch, Kimble sees that Davey's father and brother, Frank, treat the slow-witted Davey badly for blaming him for a barn fire years earlier. Kimble tries to prove Davey's innocence as Gerard flies out to Kentucky after learning of Kimble arrest and forms a posse to track him down.