A brand-new Sherlock Holmes mystery from acclaimed Sherlockian author David Stuart Davies, featuring the sinister Dr Caligari

Sherlock Holmes has just uncovered the truth about the theft of a priceless ruby. The wealthy Lady Damury staged the theft and tried to frame her husband - but just as Holmes reveals the truth, Lady Damury is found murdered. Holmes deduces that this is no crime of passion, but the work of a ruthless killer with no connection to the jewel. With reports of a man in a strange, trance-like state, Holmes finds himself entangled in a dangerous game of cat and mouse with the sinister Dr Caligari...

David Stuart Davies is one of Britain's leading Sherlockian writers. He was editor of Sherlock Holmes The Detective Magazine, authored several Holmes novels, hit play Sherlock Holmes: The Last Act, Titan's Starring Sherlock Holmes and a biography of Jeremy Brett. He is advisor to the Sherlock Holmes museum, and contributed commentaries to DVDs of the Basil Rathbone Holmes films.