Not a Pukka Gentleman

In the fifth novel in Malcolm Archibald's series of 19th century detective novels, Sergeant Watters finds himself overwhelmed with three simultaneous cases.
With a case of poisoning, a series of child kidnappings and somebody with a seeming dislike to clocks and watches, Watters and his team are stretched thin. Things become even more complicated when a circus comes to Dundee, and Watters has to help raid an illegal gambling den.
Fortunately, Dr. Beaton is there to help. But who is the mysterious man who crosses his path in Dundee, and why would anyone wish to kidnap boys from impoverished backgrounds? Find out in 'Not A Pukka Gentleman', a riveting historical mystery set in 19th century Dundee, Scotland.