The Shamrock Conspiracy

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.

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.

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

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.

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 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.

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

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.

Anne Maitland, a female lawyer, receives an unexpected late-night visit from ex-boyfriend Guy Ransome. She agrees to let him sleep on the sofa but he must leave the next morning. When he returns home he finds that his girlfriend has been murdered. His former lover agrees to defend him without telling the court that he spent the night with her. Complications ensue.

London, 1929. Frank Webber, a very busy Scotland Yard detective, seems to be more interested in his work than in Alice White, his girlfriend. Feeling herself ignored, Alice agrees to go out with an elegant and well-mannered artist who invites her to visit his fancy apartment.

A couple vacationing in Morocco with their young son accidentally stumble upon an assassination plot. When the child is kidnapped to ensure their silence, they have to take matters into their own hands to save him.