The dispatcher

The Dispatcher - John Scalzi, Zachary Quinto

This is a short story with an intriguing premise: Did you kill someone? Well, too bad for you. Because he comes back safe and sound at his house. That is 99 out of a 100 times. Our protagonist is tasked with "dispatching" people who are about to die - so they come back and live on. When his friend goes missing he will try to find him before it's too late. Grab this while you can as it's currently free at audible.