A promising young filmmaker is thrown into emotional disarray over the impending release of his second feature, when he is introduced to a magnetic French musician called Noah.

In the teeming, multicultural metropolis of modern-day London, a seemingly straightforward missing-person case launches a down-at-heel private eye into a dangerous world of religious fanaticism and political intrigue.

The story is set in 1947, following a long-retired Holmes living in a Sussex village with his housekeeper and rising detective son. But then he finds himself haunted by an…