Going through this series, if you've read any of the others then this will come as a bit of a change, the Marshal seems to find his voice in this book, he seems to have more dialogue than the rest of the books put together. Based on a true story I'd never heard of, no matter if you haven't ah the wonders of Wikepedia. If you haven't read any of the series then give it a go you won't be disappointed. You'll get totally immersed in the atmosphere and characters, I really don't want to finish the series.