I very much enjoyed this book, having never read any of Edward Marston's work before; I bought it because my son-in-law wanted it for his birthday. It will appeal to anyone who likes detective stories, and is interested in the mid-nineteenth century and the English railway system of the time, as well society in general. There are several more books in the same series.
As a writer myself, I noticed that at about two-thirds of the way through there is a shocking, dramatic and unexpected development which makes the reader doubt if they are after all right in predicting the ending.
After much fascinating detail about English railways, the story moves across the Atlantic to New York, which I enjoyed because I've recently been to New York for the first time. It was interesting to see different ways of crossing the Atlantic in those days - some types of boat were much faster than others, and so criminals could be overtaken if they were on slower type of ship.