Vengeance

Luke's entire family is killed one day by a burgler, and while he heals in the hospital, the memories of the event torturing his mind, the devil himself makes an appearance. He offers Luke a way to punish the man who had killed his family, even after the man had been killed by police. In exchange for his own soul and his service, Luke can obtain the soul of the man who killed his family, but first he must gather the souls of the living by giving them the opportunity that he is too recieving. Giving people Vengeance in exchange for their soul, punishing those guilty of crime but outside the laws power. At this cost, people can have their revenge, their Vengeance.