The Widow and the Police Officer (1967)

Celebrated sleuth Hercule Poirot, now retired and living in self-imposed exile in Venice, reluctantly attends a Halloween séance at a decaying, haunted palazzo. When one of the guests is murdered, the detective is thrust into a sinister world of shadows and secrets.

Emily Boynton, the stepmother to three children, blackmails the family lawyer into destroying a second will of her late husband that would have freed the children from her dominating influence. She takes herself, the children, and her daughter-in-law on holiday to Europe and the Holy Land. At a dig, Emily is found dead and Hercule Poirot investigates.

During WWII several murders occur at a convalescent home where Dr. Watson has volunteered his services. He summons Holmes for help and the master detective proceeds to solve the crime from a long list of suspects including the owners of the home, the staff and the patients recovering there.

Northern England, 1912. The dinner of a wealthy family is interrupted by Inspector Goole, who only announces that a young woman has committed suicide. Then, he simply asks everyone present, one by one, if they knew her.

In 1900, young widow Lucy Muir learns that her seaside cottage is haunted and forms a unique relationship with the ghost.

Jesse Stone and Captain Healy are shot during an unauthorized stake-out in Boston. Meanwhile, a cryptic letter sent from Paradise leads the mother of a kidnapped child to Stone. Though her son was declared dead, she hopes he will reopen the case.

Police Chief Jesse Stone, who was suspended by the Paradise, Mass. Town Council, begins moonlighting for his friend, State Homicide Commander Healy, by investigating a series of murders in Boston, leaving Rose and Suitcase to handle a crime spree in Paradise on their own. Jesse pours his energy into his work in an effort to push away his twin demons: booze and women. When his investigation leads to notorious mob boss Gino Fish, Jesse's pursuit becomes hazardous.

A private investigator helps a former flame solve the murder of her wealthy grandfather, who lived in a sprawling estate surrounded by his idiosyncratic family.

Two strangers strike up a conversation on a long journey. However, neither is who they appear to be, each carry secrets that threaten to ruin them — and in the background, one of the nation's largest police operations is closing in.

During an annual board of trustees meeting, one of the trustees dies. Miss Marple thinks he’s been poisoned after finding a chemical on him. She sets off to investigate at the ship where he had just come from. The fourth and final film from the Miss Marple series starring Margaret Rutherford as the quirky amateur detective.