Agatha Christie Ltd.

While traveling on a train to London, Miss Marple is told by a woman she has never met, Lavinia Pinkerton, that she is certain there have been two murders in her village of Wychwood. When Lavinia dies in what is purported to be an accident - she fell, or was pushed, down the escalator in a tube station - Miss Marple decides to visit Wychwood and see what she can find.

Elinor Carlisle has been accused of killing her wealthy Aunt and a rival in love. When Poirot comes to the case he quickly finds motive, opportunity and means for Elinor to have done the double murder. But a tidy package is not enough to satisfy Poirot's curiosity, and he eventually pieces together an entirely different picture of what really happened in a case that appeared to cut and dried.

When Rex Fortescue dies while sitting at his desk in the City, it's determined that he was in fact poisoned. Miss Marple takes a particular interest in the case when her former maid Gladys, now working in the Fortescue household, is also murdered.

"Cordially invited to The Hollow for a weekend get-together, Hercule Poirot arrives just in time to see Gerda Christow standing, revolver in hand, over the dead body of her husband. Though it seems obvious she has killed her wayward spouse, Poirot doesn't believe things are so simple, especially when all the guests seem to loathe each other. Love, deceit, mystery, and death -- rest assured Poirot will get to the heart of the matter."

"Distressed young heiress Norma Restarick comes to see Hercule Poirot about 'a murder she might have committed.' The detective consults an old acquaintance, crime novelist Ariadne Oliver, who lives in the same building as the young woman and her two roommates. When Norma's childhood nanny is found dead, apparently by suicide, Poirot believes he has identified the victim. Next he must deduce the killer, while Norma's family fears for her sanity"--Container....

When the daughter of an oil magnate is found dead on the famous Blue Train to the French Riviera, Poirot must investigate the past to reveal the killer.