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.

Sidelined by his war injuries in 1916, Captain Hastings travels to his friend’s estate at Styles Court to recover from his wounds. As the summer heats up, a tragic murder occurs, and Hastings calls upon the services of his old acquaintance Hercule Poirot. With seemingly unrelated clues - a scrap of a burned will, a false beard, and an empty packet of bromide - the brilliant detective launches his first investigation on English soil and forges an enduring friendship.

It’s December 19, 1931. Hercule Poirot and Inspector Edward Catchpool are looking forward to a much-needed, restful Christmas holiday, when they are called upon to investigate the murder of a man in a Norfolk hospital ward. Cynthia Catchpool, Edward’s mother, insists that Poirot stay with her in a crumbling mansion by the coast, so that they can all be together for the festive period while he solves the case.

When James McGrath needed someone to take a memoir to a publisher and to return letters to the woman who wrote them, he chooses his friend Anthony Cade, who agrees to take on the two jobs. But on Anthony's first night in London, the letters are stolen from his hotel room. He soon finds himself embroiled in a web of intrigue, conspiracy, and secrets that leads all the way to the top levels of government.

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.