This collection of 25 Hercule Poirot adventures is compiled from short stories written by Agatha Christie for The Sketch magazine in 1923 from March to December. In these stories, including "The Disappearance of Mr. Davenheim", "The Veiled Lady", and "The Adventure of the Egyptian Tomb", the eccentric private detective slowly and surely solves mysteries involving jealousy, revenge, and greed. These stories were well-received at the time and cemented Christie's reputation as the worthy successor to Arthur Conan Doyle.

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.

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?

Tommy and Tuppence are young, in love… and flat broke. Restless for excitement, they decide to embark on a daring business scheme: Young Adventurers Ltd.—"willing to do anything, go anywhere." But they get more than they bargained for when their first assignment for the sinister Mr. Whittington draws them into a diabolical conspiracy. It isn’t long before they find themselves plunged into more danger than they ever could have imagined.