About this episode
When Mortimer Tregennis is found dead under the same terrifying conditions as his siblings, Holmes realises the case is far from over. A strange substance, a smoking lamp, and a private experiment lead him to the truth—but at a terrible cost. And as the final pieces fall into place, Holmes is forced to choose between justice and the law. A Noiser podcast production. Narrated by Hugh Bonneville Written by Sir Arthur Conan Doyle Produced by Katrina Hughes Script Supervisor: Addison Nugent Sound Design and Audio Editing by Mirianna Pitman Latham Sound Supervisor: Tom Pink Compositions: Dorry Macaulay and Oliver Baines Mix & Mastering: Josh Latham Series Consultant: Dan Smith For ad-free listening and early access to new episodes, join Noiser+. Just click the subscription banner at the top of the feed to get started. Or go to noiser.com/subscriptions Learn more about your ad choices. Visit podcastchoices.com/adchoices