Another very entertaining novel in The Railway Detective series.
This one is set in Portsmouth and the Isle of Wight, and, once again, Queen Victoria puts in an appearance. The storyline manages to combine murder with blackmail, as the murderers find out who the victim had been having affairs with and use this to gain extra money - although blackmailing to the tune of £200 per month in 1866 seems rather excessive.
As always, a well put together plot, although this time, Alan Hinton seems to operate at a higher level than Leeming, making me wonder if the author is planning a changing of the guard?