When a well-respected businessman named Neville St. Clair disappears from a seedy opium den in London’s East End, Holmes and Watson are drawn into one of their strangest mysteries yet. A series of macabre clues leads Holmes to believe that St. Clair was murdered, and suspicion falls upon a mysterious beggar with a horrifically scarred lip. As Holmes and Watson descend deeper and deeper into London’s seedy underbelly they discover a world in which nothing and no one are quite what they seem.

A Noiser production, written by Sir Arthur Conan Doyle.

Narrated by Hugh Bonneville Produced by Katrina Hughes and Addison Nugent Sound Design and Audio Editing by Mirianna Latham & Thomas Pink Compositions: Dorry Macaulay and Oliver Baines Mix & Mastering: Cody Reynolds-Shaw Series Consultant: Dan Smith For ad-free listening and early access to new episodes, join Noiser+. Click the Noiser+ banner to get started. Or, if you’re on Spotify or Android, go to noiser.com/subscriptions Learn more about your ad choices. Visit podcastchoices.com/adchoices