When a top-secret treaty vanishes from a young diplomat’s desk under impossible circumstances, it shatters both his career and sanity. No thief could have entered or left his office undetected, yet the document has disappeared, leaving Scotland Yard baffled. In desperation, he turns to the one man in Britain who might unravel this locked room mystery: Sherlock Holmes. 

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: Liam Cameron

Series Consultant: Dan Smith

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