As night falls on Briarbrae House, Holmes sets a dangerous plan into motion, which leads to a violent struggle. And a shocking betrayal is revealed as the illusive thief of the naval treaty is unmasked. 



A Noiser podcast production.



Narrated by Hugh Bonneville 

Written by Sir Arthur Conan Doyle

Produced by Katrina Hughes and Addison Nugent

Sound Design and Audio Editing by Josh Latham

Compositions: Dorry Macaulay and Oliver Baines

Mix & Mastering: Matt Peaty

Series Consultant: Dan Smith



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