Most Similar Movies to The Sign of Four (1987)
If you are looking for movies like The Sign of Four (1987), you might like movies tagged with keyword : sherlock holmes, mystery, detective, classic literature, adventure, crime, victorian era, british, treasure hunt, thriller, tv movie, 1980s, bbc, adaptation, whodunit, suspense, investigation, london, period drama, greed .
Young Sherlock Holmes (1985), A Study in Scarlet (1933), Sherlock Holmes: Case of Evil (2002), Sherlock Holmes (1922), Ice Blues: A Donald Strachey Mystery (2008), Crooked House (2017), The Donovan Affair (1929) ... Let's take a look at the following list...

Young Sherlock Holmes (1985)
When assorted people start having inexplicable delusions that lead to their deaths, a teenage Sherlock Holmes (Nicholas Rowe) decides to investigate.
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A Study in Scarlet (1933)
In London, a secret society led by lawyer Thaddeus Merrydew collects the assets of any of its deceased members and divides them among the remaining members. Society members start dropping like flies. Sherlock Holmes is approached by member James Murphy's widow, who is miffed at being left penniless by her husband. When Captain Pyke is shot, Holmes keys in on his myste...Read all
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Sherlock Holmes: Case of Evil (2002)
Early in his crime-solving career, Sherlock Holmes attempts to prevent Moriarty from cornering the heroin market.
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Sherlock Holmes (1922)
Sherlock Holmes (John Barrymore) is a master at solving the most impenetrable mysteries, but he has his work cut out for him on his latest case. Prince Alexis (Reginald Denny) is accused of a theft that he insists he didn't commit. The evidence is stacked against him, but Holmes' trusted friend, Dr. Watson (Roland Young), vouches for the prince. As the famed detective investigates, he's brought face to face with his most devious adversary yet -- Professor Moriarty (Gustav von Seyffertitz).
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Ice Blues: A Donald Strachey Mystery (2008)
Gay detective Donald Strachey is asked by his partner Tim to investigate a mysterious donation to a youth center. Donald gets caught up in a whirlwind of deceit and danger.
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Crooked House (2017)
In Agatha Christie's most twisted tale, a spy-turned-private-detective is lured by his former lover to catch her grandfather's murderer before Scotland Yard exposes dark family secrets.
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The Donovan Affair (1929)
The lights go out at a high-society dinner party and one of the guests is murdered. The police are summoned and Inspector Killian shows up, with his assistant Carney. In order to get a clear picture of what took place, Killany decides to have the crime re-enacted (with a substitute for the murdered man.) The lights are turned out, and another man is murdered. This doe...Read all
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The Triumph of Sherlock Holmes (1935)
Holmes, retired to Sussex, is drawn into a last case when arch enemy Moriarty arranges with an American gang to kill one John Douglas, a country gentleman with a mysterious past. Holmes' methods baffle Watson and Lestrade, but his results astonish them. In a long flashback, the victim's wife tells the story of the sinister Vermissa Valley.
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Tell No One (2006)
An accidental discovery near a doctor's estate stirs up some painful memories eight years after his wife's hideous murder, and now, things are bound to take a turn for the unexpected. Does the good doctor know more than he's letting on?
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The Bank Job (2008)
Martine offers Terry a lead on a foolproof bank hit on London's Baker Street. She targets a roomful of safe deposit boxes worth millions in cash and jewelry. But Terry and his crew don't realize the boxes also contain a treasure trove of dirty secrets - secrets that will thrust them into a deadly web of corruption and illicit scandal.
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Kvinden i buret (2013)
Police inspector Carl Mørck is put in charge of a department of cold cases, joined only by his assistant, Assad. They dig into a case about a disappeared woman.
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Murder Ahoy! (1964)
After Miss Jane Marple is made a trustee of a merchant marine training vessel, a fellow trustee is poisoned, and ship's officers are later murdered after she comes on board.
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From Hell (2001)
In Victorian-era London, a troubled clairvoyant police detective investigates the murders of Jack the Ripper.
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The Hound of the Baskervilles (1988)
Sir Charles Baskerville has suffered an unusual death, causing some to say he was yet another victim of the dreaded family curse, which warns of a fabled hellhound haunting the Scottish moors. Not one prone to superstition, Sherlock Holmes (Jeremy Brett) thinks something else is afoot. Being stuck in London himself, Holmes sends his colleague, Dr. Watson (Edward Hardwicke), to investigate instead. It soon becomes clear to them both that Baskerville's demise was no mere accident.
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Summer of 84 (2018)
After suspecting that their police officer neighbor is a serial killer, a group of teenage friends spend their summer spying on him and gathering evidence, but as they get closer to discovering the truth, things get dangerous.
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Edge of Darkness (2010)
As homicide detective Thomas Craven investigates the death of his activist daughter, he uncovers not only her secret life, but a corporate cover-up and government collusion that attracts an agent tasked with cleaning up the evidence.
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Dressed to Kill (1941)
Detective Michael Shayne and his girlfriend Joanne are on their way to be married when a scream from a nearby hotel room draws his attention to a pair of theatrical murders.
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The Limehouse Golem (2016)
In Victorian London, a Scotland Yard inspector hunts down the sadistic killer behind a series of gory, Jack the Ripper-Like murders.
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