David Britland

When three respectable young females are murdered in Mayfair, Scotland Yard does not consult with Sherlock Holmes but with a Dr Karl Schermann a 'expert' on psycho-graphology and friend of Lady Bradford, the wife of the Commissioner of the Metropolitan Police.
So Holmes entertains himself with various small cases including investigating Dr. Karl Schermann but will this lead to solving the Mayfair cases with its increasing body count.
An enjoyable and well-written Victorian mystery story.

Enjoyable little book about card cheating starting off as a general history and then concentrating on Walter Scott, the Phantom of the Card Table. Lots of good information.