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.

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....

Two standalone novels from the queen of mystery, Agatha Christie. From the sprawling Leonide family to dark moors, no one can spin a mystery quite like she can. In Crooked House, the Leonides are one big happy family living in a sprawling, ramshackle mansion. That is until the head of the household, Aristide, is murdered with a fatal barbiturate injection....

A bit of adventure and quick cash is all that good-natured drifter Anthony Cade is looking for when he accepts a messenger job from an old friend. It sounds so simple: deliver the provocative memoirs of a recently deceased European count to a London publisher. Little did Anthony suspect that a simple errand to deliver the manuscript on behalf of his friend would drop him right in the middle of an international conspiracy, and he begins to realize that it has placed him in serious danger.

Major Hastings and Hercule Poirot are not interested in the mystery of the Spanish chest, which has been reported in the papers so often that it seems to be an entirely closed case. But, when Hastings persuades Poirot to attend a fabulous party given by Lady Chatterton, they discover someone sequestered upstairs who is desperate for their help. Will the contents of a dead man's pockets reveal to the inscrutable eye of Hercule Poirot who the culprit is?

Little did Anthony Cade suspect that an errand for a friend would place him at the center of a deadly conspiracy. Drawn into a web of intrigue, he begins to realize that the simple favor has placed him in serious danger. As events unfold, the combined forces of Scotland Yard and the French Sûreté gradually converge on Chimneys, the great country estate that hides an amazing secret. . . .

A blinding snowstorm - and a homicidal maniac - traps a small party of friends in an isolated estate. Out of this deceptively simple setup, Agatha Christie fashioned one of her most ingenious puzzlers, which in turn would provide the basis for The Mousetrap, the longest-running play in history. From this classic title novella to the deliciously clever gems on its tail (solved to perfection by Hercule Poirot and Miss Jane Marple), this rare collection of murder most foul showcases Christie at her inventive best.

This 1924 classic Agatha Christie Mystery features the exciting exploits of the young Anne Beddingfield. After her father, a renowned professor, dies suddenly, she goes out on her own for the first time to London in search of adventure. She gets more than she bargains for when sees a man die in a tube station and picks up a piece of paper dropped nearby.

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.

Is it a gesture of goodwill or a sinister trap that lures Rupert St. Vincent and his family to a magnificent estate? How desperate is Joyce Lambert, a destitute young widow whose only recourse is to marry a man she despises? What unexpected circumstance stirs old loyalties in Theodora Darrell, an unfaithful wife about to run away with her lover?

In this collection of short stories, the answers are as unexpected as they are satisfying. The Queen of Mystery takes bizarre romantic entanglements, supernatural visitations, and classic murder to inventive new heights.

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....

A classic from the queen of mystery: Agatha Christie.

The Leonides are one big happy family living in a sprawling, ramshackle mansion. That is until the head of the household, Aristide, is murdered with a fatal barbiturate injection. Suspicion naturally falls on the old man's young widow, fifty years his junior. But the murderer has reckoned without the tenacity of Charles Hayward, fiancé of the late millionaire's granddaughter.

A classic from the queen of mystery: Agatha Christie.

Hercule Poirot made his first public appearance in 1920 at the age, one guesses, of about 60. He finally breathed his metaphorical last in 1975 at the age of maybe 75 or 80. And in that short span of time — either 55 years or about 20, depending on how you count it — Poirot became one of England’s most profitable and ubiquitous export commodities.