Mrs Hudson and the Samarkand Conspiracy

Mrs Hudson must step into action once more.
It's summer in London, and things are quiet. But while Holmes and Watson chafe at their inactivity, a train, carrying a vital encoded communication, is entering a tunnel in an obscure region of the Balkans – never to be seen again.
The case of the disappearing train is only the beginning of the nation’s difficulties. The missing message must be found and decoded, and a diplomat’s wife must be rescued from the clutches of a pernicious blackmailer.
The nation is in danger, and if a diplomatic scandal of disastrous proportions is to be avoided, Sherlock Holmes’ brilliance may not be enough…
From the Richard & Judy-featured author of The Conjuror’s Bird, back by popular demand, the first new Holmes & Hudson novel for several years.