The Shamrock Conspiracy

Eccentric consulting detective Sherlock Holmes and Doctor John Watson battle to bring down a new nemesis and unravel a deadly plot that could destroy England.

From the Universal synopsis: Retired Inspector Blake of Scotland Yard learns that Lord Blanton has acquired the sacred "Love Ring"---a cursed jewel that has brought grief to its previous owners. Prince Darius seeks to obtain the ring, and the mummy of a princess of an ancient country to return them to his homeland.

A hard-nosed Chicago cop is sent to London to bring back an American mobster being held for extradition. Brannigan in his Irish-American way brings American law to the people of Scotland Yard but has to contend with a stuffy old London first.

Rinty is a police-dog assigned to a young Scotland Yard police-officer who covers the Limehouse district of London.

A captain saves a kidnapped magnate from a nursing home run by foreign agents.

A British couple are shocked out of their suburban malaise when British intelligence agent Stewart shows up at their door and wants to use their house for a stakeout. Stewart reveals that their neighbors are undercover Russian KGB spies, part of a Soviet espionage network.

In this mystery, a newspaper executive and three of his colleagues conspire to have the owner of the highly-respected London Sun committed to an insane asylum. The hapless publisher manages to escape. Soon after, the four collaborators begin dying one-by-one. Oddly their obituaries appear in a rival publication before they are actually killed.

In 1860, Inspector Jack Whicher of Scotland Yard is sent to rural Wiltshire to investigate the murder of the three-year-old boy Saville Kent, who was snatched from his bed at night and murdered.

A Scotland Yard officer investigates the mysterious disappearance of a series of corpses. Based on the novel by Stanisław Lem.

A masked killer is stalking and killing Londoners outside a nightclub.

Scotland Yard Inspector George Gideon starts his day off on the wrong foot when he gets a traffic-violation ticket from a young police officer. From there, his 'typical day" consists in learning that one of his most-trusted detectives has accepted bribes; hunts an escaped maniac who has murdered a girl; tracks a young girl suspected of involvement in a payroll robbery and then helps break up a bank robbery.

When Professor Willingdon becomes wary of the nuclear weapons he is helping build, he steals a warhead and threatens to detonate it in London in seven days unless the government begins nuclear disarmament. As Willingdon goes into hiding, Detective Folland of Scotland Yard sets out to find him. Willingdon's daughter Ann also joins the cause, hoping she can talk sense into her father before he causes a catastrophe.

After an innocent man is executed in a case he was responsible for, a Scotland Yard superintendent finds himself investigating the murder of his key witness.

A young heiress finds evidence suggesting that at night she acts under the influence of a family curse and has begun committing ghastly murders in a nearby park.

A madman is on the loose... killing fashion models that appear on the cover of magazines. The police start a manhunt in an attempt to capture the killer.

A Scotland Yard investigator looks into four mysterious cases involving an unoccupied house.

Sherlock Holmes investigates when young women around London turn up murdered, each with a finger severed. Scotland Yard suspects a madman, but Holmes believes the killings to be part of a diabolical plot.

During World War II, a group of British soldiers are captured by the Japanese, tortured and their hands are cut off. Years later, a mad killer terrorizes London by cutting off the hands of his victims.

Scotland Yard detectives attempt to solve a spate of safe robberies across England beginning with clues found at the latest burglary in London. The film is notable for using a police procedural style made popular by Ealing in their 1950 film The Blue Lamp. It is known in the US as The Third Key.

The police and British security forces call in Professor Van Helsing to help them investigate Satanic ritual which has been occurring in a large country house, and which has been attended by a government minister, an eminent scientist and secret service chief. The owner of the house is a mysterious property tycoon who is found to be behind a sinister plot involving a deadly plague. It is in fact Dracula who, sick of his interminable existence, has decided that he must end it all in the only possible way- by destroying every last potential victim.