Story Structure — 5 Plot Phases
The Auction & The Burglary
A convict embeds a cipher in three music boxes sold at auction. Emery reports a targeted burglary, prompting Holmes and Watson to investigate his collection.
Key Events
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Prison Code Embedding — Convict hides bank plate coordinates in music box melodies. Characters: Sherlock Holmes
Location: Dartmoor Prison
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Auction Distribution — Three variant boxes are sold to separate buyers. Characters: Sherlock Holmes
Location: Auction House
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Emery Burglary Report — Emery reports a targeted burglary of a cheap box. Characters: Julian 'Stinky' Emery, Dr. John H. Watson, Sherlock Holmes
Location: Holmes Flat
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Emery Murder — Courtney's accomplice murders Emery after he refuses to sell. Characters: Julian 'Stinky' Emery, Mrs. Hilda Courtney
Location: Emery Residence
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Dartmoor Prison — Origin point where the code is embedded in music boxes. Characters: Sherlock Holmes
Location: Dartmoor Prison
Murder & The Hunt
Emery is assassinated after refusing to sell his box. Holmes tracks the buyers, discovers Courtney's disguise, and acquires the final box.
Key Events
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Emery Murder — Courtney's accomplice murders Emery after he refuses to sell. Characters: Julian 'Stinky' Emery, Mrs. Hilda Courtney
Location: Emery Residence
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Second Box Investigation — Holmes discovers Courtney disguised as a maid stealing a box. Characters: Sherlock Holmes, Dr. John H. Watson, Mrs. Hilda Courtney
Location: Second Buyer House
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Third Box Acquisition — Holmes purchases the final box and decodes musical notes to letters. Characters: Sherlock Holmes
Location: Third Buyer House
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Scotland Yard Briefing — Authorities confirm boxes link to stolen currency printing plates. Characters: Sherlock Holmes
Location: Police Station
The Trap & The Escape
Holmes follows a tobacco clue to Courtney, leading to a warehouse ambush. He survives poison gas while Courtney steals the last box from Watson.
Key Events
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Scotland Yard Briefing — Authorities confirm boxes link to stolen currency printing plates. Characters: Sherlock Holmes
Location: Police Station
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Flat Ransacking — Criminals search the flat, leaving a distinct tobacco clue. Characters: Sherlock Holmes, Dr. John H. Watson
Location: Holmes Flat
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Tobacco Trail — Holmes tracks the tobacco seller to Courtney. Characters: Sherlock Holmes, Mrs. Hilda Courtney
Location: Tobacconist Shop
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Warehouse Ambush — Courtney's gang captures Holmes and attempts to kill him with gas. Characters: Sherlock Holmes, Mrs. Hilda Courtney
Location: Warehouse
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Box Theft from Watson — Courtney steals the third box from Watson while Holmes is trapped. Characters: Dr. John H. Watson, Mrs. Hilda Courtney
Location: Holmes Flat
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Holmes Escape — Holmes narrowly survives the gas attack and returns home. Characters: Sherlock Holmes
Location: Warehouse
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Music Boxes — Three variant boxes containing the cipher for the hidden plates. Characters: Sherlock Holmes, Dr. John H. Watson, Mrs. Hilda Courtney
Location: Various
The Deduction & The Raid
Watson's quote about Dr. Samuel Johnson reveals the hiding place. Courtney's gang infiltrates the museum to steal the plates.
Key Events
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Holmes Escape — Holmes narrowly survives the gas attack and returns home. Characters: Sherlock Holmes
Location: Warehouse
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Johnson Deduction — Watson's quote about Dr. Samuel Johnson triggers Holmes' final deduction. Characters: Sherlock Holmes, Dr. John H. Watson
Location: Holmes Flat
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Museum Infiltration — Courtney's gang joins a tour group to locate the hidden plates. Characters: Mrs. Hilda Courtney, Sherlock Holmes
Location: Dr. Samuel Johnson House
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Plate Recovery — Courtney steals the plates while Holmes ambushes the gang. Characters: Mrs. Hilda Courtney, Sherlock Holmes
Location: Museum Basement
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Dr. Samuel Johnson House — Museum location where the final confrontation occurs. Characters: Mrs. Hilda Courtney, Sherlock Holmes
Location: Dr. Samuel Johnson House
Resolution & Return
Holmes ambushes the gang at the museum. Scotland Yard arrests the criminals, and the stolen bank plates are safely returned.
Key Events
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Plate Recovery — Courtney steals the plates while Holmes ambushes the gang. Characters: Mrs. Hilda Courtney, Sherlock Holmes
Location: Museum Basement
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Gang Arrest — Scotland Yard officers arrive and arrest the criminals. Characters: Sherlock Holmes, Mrs. Hilda Courtney
Location: Museum
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Plates Returned — Stolen currency plates are safely returned to the bank. Characters: Sherlock Holmes
Location: Bank of England
A convicted thief in Dartmoor prison hides the location of the stolen Bank of England printing plates inside three music boxes. When the innocent purchasers of the boxes start to be murdered, Holmes and Watson investigate.