When Hercule Poirot, a well-known inspector and an eccentric, but very likable, Belgian refugee from the Great War, discovers that Emily Inglethorp, his wealthy benefactress who helped him through his new life, has been found dead, poisoned with strychnine, he sets out to solve the crime. But there is a problem. The main suspects are close relatives who can't or don't want to cooperate.

This mystery novel follows Anthony Cade, a man who unknowingly finds himself in the middle of an international conspiracy and a murder investigation after accepting a simple delivery job from an old friend. As Cade slowly begins to realize his predicament has potentially put him in danger, he begins his own investigation into the strange series of events just as Inspector Battle of Scotland Yard begins the main, official investigation.

It had been a typical New Year's Eve party. But as midnight approaches, Mr. Satterthwaite - a keen observer of human nature - senses that the real drama of the evening is yet to unfold. And so it proves when a mysterious stranger knocks on the door. Who is this Mr. Quin? Mr. Satterthwaite's new friend is an enigma. He seems to appear and disappear almost like a trick of the light. In fact, the only consistent thing about him is that his presence is always an omen - sometimes good, but sometimes deadly....

From the brilliant pen of Agatha Christie comes two novels featuring the beloved sleuthing duo: In the The Secret Adversary, Tommy and Tuppence decide to embark on a daring business scheme: Young Adventurers Ltd. But they get more than they bargained for when their first assignment for the sinister Mr. Whittington draws them into a diabolical conspiracy. Set during the dark days of World War II, Agatha Christie’s N or M? puts two most unlikely espionage agents, Tommy and Tuppence Beresford, on the trail of a pair of Nazi spies who have murdered Britain’s top agent.

The Big Four: Framed in the doorway of Hercule Poirot’s bedroom stands an uninvited guest, coated from head to foot in dust. The man stares for a moment, then he sways and falls. Who is he? And what is the significance of the figure 4, scribbled over and over again on a sheet of paper? Cards on the Table: Mr. Shaitana is famous as a flamboyant party host. Nevertheless, he is a man of whom everybody is a little afraid. So when he boasts to Hercule Poirot that he considers murder an art form, the detective has some reservations about accepting a party invitation.

Mr. Shaitana is famous as a flamboyant party host. Nevertheless, he is a man of whom everybody is a little afraid. So when he boasts to Hercule Poirot that he considers murder an art form, the detective has some reservations about accepting a party invitation to view Shaitana's "private collection". Indeed, what begins as an absorbing evening of bridge is to turn into a more dangerous game altogether.

Pretty, young Anne came to London looking for adventure. In fact, adventure comes looking for her - and finds her immediately at Hyde Park Corner tube station. Anne is present on the platform when a thin man, reeking of mothballs, loses his balance and is electrocuted on the rails. The Scotland Yard verdict is accidental death. But Anne is not satisfied. After all, who was the man in the brown suit who examined the body? And why did he race off, leaving a cryptic message behind?

In a remote house in the middle of Dartmoor, six shadowy figures huddle around a table for a seance. Tension rises as the spirits spell out a chilling message: "Captain Trevelyan...dead...murder." Is this black magic or simply a macabre joke? The only way to be certain is to locate Captain Trevelyan. Unfortunately, his home is six miles away and, with snowdrifts blocking the roads, someone will have to make the journey on foot....

Mrs. Packington felt alone, helpless, and utterly forlorn. But her life changed when she stumbled upon an advertisement in the Times that read: "Are you happy? If not, consult Mr. Parker Pyne." Equally adept at putting together the fragments of a murder mystery or the pieces of a broken marriage, Mr. Parker Pyne is possibly the world's most unconventional private investigator. Armed with just his intuitive knowledge of human nature, he is an Englishman abroad, traveling the globe to solve and undo crime and misdemeanor.

Jane Marple is an elderly lady from St Mary Mead who possesses an uncanny knack for solving even the most perplexing puzzles. Now, for the first time in 45 years, Agatha Christie’s beloved character returns to the page for a globe-trotting tour of crime and detection. Join Marple as she travels through her sleepy English village and around the world. In St Mary Mead, a Christmas dinner is interrupted by unexpected guests; the Broadway stage in New York City is set for a dangerous improvisation.