An evil stalks London, blown in from the tropics. Stories of cursed giant rats and malign spirits haunt the garrets of the East London neighborhood of Limehouse. A group of merchants are dying one by one. The elementary choice to investigate these mysterious deaths is, of course, the team of Holmes and Dr Watson. But the unique gifts of their housekeeper, Mrs Hudson, and her orphaned assistant Flotsam, will also be needed to solve the case. Can she do it all under the nose of Sherlock himself?

Praise for Martin Davies:
"The voice is fantastic...so readable and enjoyable and multi-layered." (Boyd Hilton, Radio Five)
"A pacy confection of history, mystery and romance... a most engaging and unusual novel." (The Times)
"Ambitious and intriguing... part thriller, part love story, part quest, this is a hugely readable book." (Spectator)