To me, this novel attempts to imagine the interior life of Sherlock Holmes which I very much enjoyed. It is not a plot of action but more an opportunity to contemplate and work with Holmes as he attempts to unravel the complex mystery of Mr Tollemache's disappearance. I found the imagery and period detail rich and imaginatively satisfying, particularly sections such as the Halloween bonfires and the evening with the beautiful and enigmatic Louisa Reid. Holmes's relationship with Crowley is an interesting twist and offers some fascinating dialogue between two men of powerful intellect and unconventional views. Louisa, too, is intriguing because she stands outside our conception of the 'Victorian woman' and is highly educated, bohemian and sexually active. Whilst the novel is dialogue-heavy in places, the concepts are worthy of debate, though my mind was fired most by the interplay of character, the descriptions and atmosphere of the island and the details mentioned above. A worthy re-imagining.