Murder by Other Means by John Scalzi
First, go back and listen to The Dispatcher if you haven't already. Murder by Other Means is the sequel and I don't think it would be best as a stand-alone. The world is pretty much like our world except 99.9% of murder victims come back to life, transported from the murder scene to someplace they feel safe, usually their home. Tony Valdez is a dispatcher, someone who steps in and kills you when you’re at risk of an unintentional death, like a car accident or unsuccessful surgery, letting you live 99.9% of the time.
This time around, Tony is taking some jobs that are maybe not as legal as he would like, but money is getting tight all around. It starts going awry when he is hired to help a businessman make it to China quicker than he could by plane. Then he's a witness to a bank robbery that goes bad. When people start dying and Tony needs...