Dressed to Kill

A thief in Dartmoor prison embeds code revealing the hidden location of extremely valuable stolen Bank of England currency printing plates in the melody notes of three music boxes to be sold at auction. Each box plays a subtly different version of The Swagman. At the auction each is purchased by a different buyer.

Sherlock Holmes sets out to discover why a trio of murderous villains, are desperate to obtain three unassuming and inexpensive little music boxes.