"The Adventure of the Black Owl" (2016)
Included in: The Lost Chronicles of Sherlock Holmes, Volume 2 (Denis O. Smith)
Story Type: Pastiche
Canonical Characters: Sherlock Holmes; Dr. Watson; Tobias Gregson
Other Characters: Professor Humphrey Arbuthnot; Ruby Parrish; Mrs Arbuthnot; Terence Chalfont; Mrs Routledge; Lady Boothby; PC Harper; Dr Ludwig Zyss; (Mary Cartwick; Lord Boothby; Martin Ferris; Minnie Tuttle; Susannah Cracknell; Nicholas Routledge; Mrs Gregson)
Unnamed Characters: Kentish Town Road Duty Sergeant; Holly Grove Constable; Mrs Routledge's Maid; Lady Boothby's Maid; (Arbuthnot's Ex-maid; Messenger; Highgate Police Constable; Belvedere Night Porter; Belvedere Manager; Belvedere Day Porter; Belvedere Chambermaid; Hotel Guests from Edinburgh; Mrs Routledge's St Albans Friend; St Albans Police; Mr Routledge; Holborn Shop Manager)
Locations: 221B, Baker Street; Highgate; Holly Grove; Southampton Row; Belvedere Hotel; Gospel Oak; 14, Trenchard Villas; Hampstead; Heath Street; Belsize Park; Scotland Yard; Hampstead Police Station; Hampstead High Street; Kentish Town Road Police Station
Story: Holmes has dismissed the murder of Professor Arbuthnot in Highgate as seemingly ordinary, until he is visited by Gregson, who tells him that Arbuthnot was to have had a meeting with his former partner-turned-longtime-bitter rival, Dr Zyss, which was also to be attended by Arbuthnot's sister, Lady Boothroyd. A messenger brought a note saying that Zyss would not be able to come, and when she took him the message, Mrs Arbuthnot found her husband dead, with a dagger in his chest. Gregson has discovered a lacquered brass paperweight, in the shape of an owl, amidst the signs of a struggle in the professor's study. The maid saw a veiled woman in black pointing silently at the house. Dr Zyss, is also seen with a woman in black, before disappearing from his hotel room. Zyss was later seen by an old lady, entering a church, but when she looked inside, the church was empty.

"The Adventure of the Brown Box" (2008)
Included in: Sherlock Holmes: The Game's Afoot (David Stuart Davies); The Lost Chronicles of Sherlock Holmes, Volume 2 (Denis O. Smith)
Story Type: Pastiche
Canonical Characters: Sherlock Holmes; Dr. Watson; Athelney Jones; (Mrs Hudson's Maid)
Other Characters: Agnes Montague; Ship Inn Manager; Wharncliffe Crescent Crowd; Policeman; Mrs Loveday; (Victor Furnival; Agnes's Father; Mrs Eardley; Furnival's Neighbour; Captain Jex; Captain David McNeill; Doctor; Grindley & Leggatt; Bar Customers; Soldiers; Witnesses; Prosecutor; Defense Counsel; Jury; Clerk)
Date: September / Two Years Later
Locations: 221B, Baker Street; Norwood; Wharncliffe Crescent; Charing Cross Station; Greenwich; Old Ship Inn; The West Indies; St Anthony; Trianna Bay; Harbour Bar; Furnival's Plantation; Jamaica; Courtroom; Halifax Islan Penal Colony; Norwood Station
Story: Holmes is consulted by Agnes Montague, whose uncle, Victor Furnival, a collector of exotic curios, has apparently died of fright at his breakfast table after opening a carved wooden box received in the morning post. The following day she was visited by Captain Jex, an acquaintance of her uncle from the West Indies. She returned from making tea to find him unconscious on the floor, with the open box beside him.

"The Adventure of the Purple Hand" (1982)
(Written as D.O. Smith)
Included in: The Further Adventures of Sherlock Holmes (Richard Lancelyn Green); The Lost Chronicles of Sherlock Holmes, Volume 2 (Denis O. Smith)
Story Type: Pastiche
Canonical Characters: Sherlock Holmes; Dr. Watson; Mrs. Hudson
Other Characters: Mark Pringle; Laetitia (Wadham) Pringle; John Dobson; Helen Dobson; Drowned Assassin; Station-Trap Driver; John Aloysius Wadham; Helen (Montgomery) Wadham; Serbian Assassin; (James Green; Arthur Pendleton)
Date: June, 1890
Locations: Portman Square; 221B, Baker Street; Low Meadow, between Staines & Laleham; A Hansom; A Train; Staines
Story: Mark Pringle, a malaria-suffering tea importer, tells Holmes of a series of incidents including an overheard conversation between his wife and a stranger, a figure seen crossing his garden after dark, and a five-fingered purple handprint that has appeared on the garden wall. Some weeks later Laetitia, his wife hires a gardener, Dobson, who moves into a cottage in the grounds of Pringle's home, with his wife. Pringle notices another purple handprint on the gardener's cottage wall, and later becomes annoyed that the man seems to be doing no work around the place.

One evening, he catches his wife and Dobson in an embrace, although she explains that Dobson has sprained his ankle and she is helping him home. He also becomes concerned at the overly familiar relationship building between his wife and Helen Dobson. He tries to dismiss the Dobsons, but his wife persuades him not to. Some time later, he again sees a figure in the garden, and later still he receives a letter bearing the purple handprint.

The following day, Watson reads of the body of a man, with a bottle of ink in his pocket, found in the Thames near Pringle's home. As they journey to Low Meadow, Holmes tells Watson of a Balkan secret society, the Seven-Fingered Hand. They arrive too late to prevent tragedy, and are unable to prevent the ultimate escape of the villain.

"The Adventure of the Smiling Face" (2014)
Included in: The Mammoth Book of the Lost Chronicles of Sherlock Holmes (Denis O. Smith)
Story Type: Pastiche
Canonical Characters: Sherlock Holmes; Dr. Watson; Tobias Gregson
Other Characters: Georgina Calloway; Professor Ainscow; Perkins; John Strange; Turkish Guide; Expedition Porters; Professor James Palfreyman; Timothy Martin; Mrs Wheeler; Policemen; (Beryl Wheeler; Italian Waiter; Georgina's Parents; Georgina's Neighbour; Dr David Webb; Paul Webb; Professor Schultz; Sidney Wheeler; Mrs Walsh; Edith Trubshawe; Professor Ormiston; King Pellas II; Threspotia; Mrs Wheeler's Sister; St Aidan's College Servant)
Date: November, 1884 / A few years after the conclusion of the Crimean War
Locations: 221B, Baker Street; Kent; Beckenham; Stagg's Lane; Bluebell Cottage; Aylmer's Lane; Western Macedonia; Pindus Mountains; Monastery
Story: Holmes is called on by Georgina Calloway, relation of and assistant to the archaeologist Professor Palfreyman. Recently, she has heard him talking to himself, and he has appeared distressed after receiving a blank sheet of paper in the mail, which turned out to have a picture of a woman's face, drawn in invisible ink on it. More recently, he has collapsed after receiving a glazed tile with a similar smiling face on it, and has taken to carrying a revolver. Georgina, herself, has now been attacked in the lane outside the cottage.

Holmes and Watson accompany her to Beckenham, where they find Palfreyman missing, and an account of events from his past, left for Georgina to read, involving the search for the tomb of King Pellas II and the goddess Threspotia. The present case concludes in a woodland clearing with two dead bodies, but only one set of footprints leading to it. Holmes's investigations reveal the tragic connection the events of the past have with the case at hand.