At Mr. and Mrs. Unkerton's party in Greenway's House, Mr. Satterthwaite learns of a haunted window: No matter how many times it is replaced, it always contains the image of a gentleman in a plumed hat. When gunshots are heard, Satterthwaite finds that two of the guests have been shot dead, which is shortly followed by a sighting of the gentleman in the newly-replaced windowpane. Can Mr. Quin shed light on the mystery?

Just as boredom is setting in on his long trip by motor coach across the desert to Baghdad, Mr. Parker Pyne reads about the case of the missing Mr. Long, the famous defaulting financier who, as the papers would have it, is in South America. Another member of his party, Captain Smethurst, tells Pyne that he is worried about something. But before he can tell Pyne what it is, he is found dead, with no visible wound. Pyne must piece together what happened from various clues, including scraps of conversation overheard back in Damascus.

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.

A young banker is suspected of stealing one million dollars in Liberty Bonds on a transatlantic journey to New York, and appeals to Hercule Poirot to clear his name. Poirot learns the identities of the three people who hold keys to the locked trunk, but it won't be as easy to identify the true thief.

Waiting for his car to be fixed, Mr. Satterthwaite sits in a tea shop called the Harlequin cafe, thinking of his friend Harley Quin, whom he hasn’t seen in many years. Then, in a burst of sunshine, the very same Mr. Quin walks through the door, along with his diligent dog, Hermes. Satterthwaite is telling him the very long history of the family he is off to visit, when their conversation is interrupted by the abrupt entrance of a member of that very same family, intent upon replacing her harlequin cups.

Mr. Satterthwaite and Colonel Melrose are comfortably ensconced in the Colonel's study when the phone suddenly rings. Someone has been murdered, and, as the county chief constable, the Colonel lets Satterthwaite accompany him to the scene of the crime. The two of them have opposing opinions on why Sir James Dwighton has been bashed over the head with a blunt instrument. Rumor had it that red-haired beauty Laura Dwighton and her guest, the very attractive Mr. Paul Delangua, were engaged in an illicit affair, and Paul was thrown out by the disgruntled Sir James. But the facts of the murder all seem to add up too nicely....

Jane Cleveland is in desperate need of a job, and when she sees an ad for a woman of her description needed to impersonate a grand duchess, she cannot believe her luck. The royal retainers tell Jane that the job will be dangerous because attempts have been made on the Grand Duchess Pauline's life, but this only serves to make the job more appealing. Jane's disguise initially goes according to plan, but when she is kidnapped and drugged, it appears that her new employers are not all that they seem....

Love can propel us to our greatest heights . . . and darkest depths. In this new compendium of Agatha Christie short stories, witness the dark side of love—crimes of passion, games of the heart, and deadly deceits. This pulse-pounding compendium features beloved detectives Hercule Poirot and Miss Marple, master of charades Parker Pyne, the enigmatic Harley Quin, and the adventurous Tommy and Tuppence, all at the ready to solve tantalizing mysteries.

Summertime—as the temperature rises, so does the potential for evil. From Cornwall to the French Riviera, whether against a background of Delphic temples or English country houses, Agatha Christie’s most famous characters solve complicated puzzles as the stakes heat up. Pull up a deckchair and enjoy plot twists and red herrings galore from the bestselling fiction writer of all time.

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.

The Man in the Brown Suit is Agatha Christie at her best, as a young woman makes a dangerous decision to investigate a shocking “accidental” death she witnesses at a London tube station. In Agatha Christie’s classic crime adventure novel, They Came to Baghdad, a bright young adventure seeker in the Middle East finds more excitement than she bargained for when a wounded spy expires in her hotel room.

On a dark evening, Mr. Harley Quin appears at the door of Royston Hall under the premise that his car has broken down. Once inside, he embarks upon the tragic tale of Royston Hall's former occupants, leading to a dramatic change in the perceptions of the current inhabitants - but has Mr. Quin's revelation come too late?

In this short story, Hercule Poirot is asked to attend a Christmas celebration in order to apprehend a jewel thief who has taken advantage of an unwary Eastern prince.

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.