First Kill (2017) on Netflix

Plot summary

Will Beeman, a Wall Street broker, has little time for his wife Laura and their son Danny, a boy bullied at school. He takes the family to Granville, Ohio, where he grew up, hoping to bond with the boy. Police Chief Marvin Howell, a family friend, tells him about a recent bank robbery that took millions. While Will teaches Danny to hunt with a rifle, they witness an armed confrontation, and a man is shot in the shoulder. Shots come their way, and Will fires his rifle in self-defense, killing the gunman, a police officer who never identified himself. Will brings the wounded stranger, Levi Barrett, to the cabin so Laura, a surgeon, can treat him. Levi then takes Danny hostage at knifepoint and demands Will's help retrieving a key in exchange for the boy.