Night Must Fall (1937)

Adrian Messenger, a famous writer, asks his friend Anthony Gethryn, a former British agent, to help him investigate the whereabouts of the people who appear on a list, without asking him the reason why he should do so.

Two young gentlemen living in 1890s England use the same pseudonym ('Ernest') on the sly, which is fine until they both fall in love with women using that name, which leads to a comedy of mistaken identities.

In sleepy Santa Rosa, restless young Charlie’s world brightens when her sophisticated Uncle Charlie arrives for a long visit. But as his behavior grows increasingly strange, she begins to suspect that her beloved uncle may be hiding a terrible secret—and that danger has quietly entered her home.

A wheelchair-bound photographer spies on his neighbors from his apartment window and becomes convinced one of them has committed murder.

In the small resort town of Lighthouse Cove, everyone knows that the best man for the job is a woman. And that woman is Shannon Hughes, owner of a construction company and an expert in Victorian home restoration and renovation. Through her renovations she will find clues to uncover the house’s secret past and in turn become an unlikely sleuth to help crack these unsolved mysteries

On a train headed for England a group of travelers is delayed by an avalanche. Holed up in a hotel in a fictional European country, young Iris befriends elderly Miss Froy. When the train resumes, Iris suffers a bout of unconsciousness and wakes to find the old woman has disappeared. The other passengers ominously deny Miss Froy ever existed, so Iris begins to investigate with another traveler and, as the pair sleuth, romantic sparks fly.

When a young writer is falsely accused of murdering a famous actress, he escapes custody and joins forces with the daughter of a police constable to prove his innocence.

Kit Preston begins to unravel when she receives threatening telephone calls informing her she's soon to be murdered.

Scooby-Doo and the Mystery Gang visit Oakhaven, Massachusetts to seek strange goings on involving a famous horror novelist and his ancestor who is rumored to have been a witch.

Not even the joys of parenthood can stop married sleuths Nick and Nora Charles from investigating a murder on a Long Island estate.