"Blue Moon" is book #24 in the Jack Reacher series. Always willing to help the down trodden, Reacher goes above and beyond to help an old couple being used and abused by loan sharks. I found the center of the book a bit boring, non events happening. It did pick up and Reacher seemed to go over to the dark side, leaving a pile of bodies in his wake. As always, he moves on, but now caries the cloak of a thief and mass murderer.