Sherlock Holmes and his cousin, Dr Henry Vernier, travel to Whitby, to investigate a curious case on behalf of a client. He has fallen in love, but a mysterious letter has warned him of the dangers of such a romance. The woman is said to be under a druidic curse, doomed to take the form of a gigantic snake. Locals speak of a green glow in the woods at night, and a white apparition amongst the trees. Is there sorcery at work, or is a human hand behind the terrors of Diana's Grove?

Sam Siciliano is the author of several novels, including the Sherlock Holmes titles The Angel of the Opera, The Web Weaver, The Grimswell Curse and The White Worm. He lives in Vancouver, Washington.