The new Sherlock Holmes novel from the New York Times bestselling author of The Age of Odin and Firefly - Big Damn Hero. It is 1890, and in the days before Christmas Sherlock Holmes and Dr John Watson are visited at Baker Street by a new client. Eve Allerthorpe - eldest daughter of a grand but somewhat eccentric Yorkshire-based dynasty - is greatly distressed, as she believes she is being haunted by a demonic Christmas...