“This is a random universe,” Reacher says. “Once in a blue moon things turn out just right.”

Reacher, on a Greyhound bus, minding his own business, with all the time in the world to get there. He steps off the bus to help an old man who appears to be a victim waiting to happen. But you know what they say about good deeds. Now Reacher wants to make it right. Also, an elderly couple have made a few well-meaning mistakes, owing big money to some very bad people. Reacher eventually finds himself a wanted man in the middle of a brutal turf war between rival Ukrainian and Albanian gangs. Reacher stays ahead of loan sharks, thugs, and assassins throughout the story. The odds are against him, but he holds up the justice, the kind that comes along once in a blue moon.