Sherlock Holmes and the Zombie Affair

Sherlock Holmes and Dr Watson are called back to the scene of the Case of the Dog which Did Not Bark, to investigate reports of a litch, a risen corpse or zombie, in the area.
In the course of their investigation they meet danger and are involved in mysterious events. They see death, true love(perhaps), and a great mystery revealed in an idiosyncratic way by the well meant actions of Dr Watson.