Mono Noir · Oct 28, 2026 · 27:34
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This radio drama uses AI-generated writing, voices, music, sound effects and artwork. All spoken performances in this edition use ElevenLabs V4.
Within a day of a naval captain's death on the night express, the Salzburg police have the sleeping-car attendant in a cell, because they say only his key opens the door the captain went out through. His daughter, a nurse at Guy's, is frightened by how fast the police moved. Is the man with the key the man who used it?
🎧 Full episode of Sherlock Holmes — The New Cases: a new Sherlock Holmes radio drama, an audio mystery performed by a full cast.
Read the story and the full transcript: https://matezz.com/episodes/the-case-of-the-hallmoor-pass-tunnel-sherlock-holmes-the-new-cases/
Stories, transcripts and the schedule: https://matezz.com
🎭 Directed Edition — every role cast for this story and every line performed with full voice direction.
London, April 1952. Sleet ticks at the windows of Baker Street, the last ration of coal has to last until Friday, and Holmes, in his dressing gown, is feeding his dullest correspondence to the grate for the warmth: a neighbour's hens have stopped laying, a vicar suspects his organist of drink. Watson singes his fingers rescuing a blue envelope, a long-awaited cheque, and then the street bell rings once and nothing follows. Holmes is down the stairs in a moment to stop a woman in a nurse's cape before she turns away. Bianca Esposito, of Guy's Hospital, has changed her mind about coming and changed it back. Her father is a sleeping-car attendant on the night express through the Alps; an American naval captain travelling in his carriage died last night, and the Salzburg police already have her father in a cell. It is not the death that frightened her but the speed of it, and Watson, counting the hours, agrees. By the next dusk Holmes and Watson are standing in the dead man's sleeping car on a Salzburg siding with Bianca and an Austrian inspector named Zorn. The outer doors are locked at night and lock themselves when they close, and Zorn says that only the attendant's square key opens them. The captain went out through one of them in the Hallmoor Pass tunnel, struck from behind, and the door was found shut and locked afterwards. One letter is missing from his dispatch case, and the Americans will not say which. In the lounge of the hotel where the passengers are kept, under a stag's head, two of them sit waiting to go home: Lennox, a newspaper correspondent, and Pauline, the captain's typist, who has a boat to catch. In the snow behind the police cells a warder turns Bianca, Holmes and Watson back at the gate, and at headquarters Zorn explains that the passengers are only witnesses and that the attendant had the keys. Zorn has his man; Holmes has a locked door, a missing letter and two passengers who cannot leave.
From the series Sherlock Holmes — The New Cases: a real crime of the 1950s reimagined as a classic Sherlock Holmes radio mystery, performed by a full multi-voice AI cast, with sound design and a light score that stays under the story.
Loosely inspired by a real event of the 1950s. All names, characters, dialogue and events are fictional; the words, actions, motives and private lives of every character — including the dead naval officer, his colleagues and acquaintances, the railway staff and passengers, the investigators and the police — are invented for drama, and so is the solution of the mystery. Where a real city, state, public body or newspaper is mentioned, its part in this story is invented; the express, the mountain pass, the hotel and the police headquarters named in it are invented too. This is a work of fiction, not a factual account of any real person or institution. No real person is portrayed, and no real individual, company or organisation is accused of any act shown here.
Setting: London and Salzburg, Austria — April 1952.
Writer v2.7 — the studio's newest writing process: the plot is planned and checked by an AI story editor, then each act is drafted with the whole story in view and edited before a word is voiced — and then cast and performed with our new casting and voice direction.
Chapters:
0:00 Sleet, Coal Rations and Correspondence for the Grate
2:48 A Sleeping Car on a Salzburg Siding
4:35 Two Passengers Under a Stag's Head
6:16 Snow in the Yard Behind the Police Cells
7:33 A Bare Desk at Police Headquarters
8:53 A Pen Scratching in the Hotel Writing Room
10:16 A Brandy Bottle at the Hotel Bar After Dinner
11:43 A Hard Chair in the Hotel Lobby
13:25 The Empty Platform After the Last Departure
14:35 Breakfast Time in the Hotel Lounge
16:00 A Brass Grille at the Station Telegraph Counter
17:05 A Whitewashed Cell and a Plank Bed
18:52 Zorn's Office the Next Morning
20:55 Shut Inside the Captain's Compartment
21:49 The Inspector Keeps His Coat On
23:21 A Lit Stove in the Office That Night
25:45 Back in Baker Street Before a Full Scuttle
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