Captain Arthur Hastings, invalided in the Great War, is recuperating as a guest of John Cavendish at Styles Court, the "country-place" of John's autocratic old aunt, Emily Inglethorpe - she of a sizeable fortune, and so recently remarried to a man 20 years her junior. When Emily's sudden heart attack is found to be attributable to strychnine, Hastings recruits an old friend, now retired, to aid in the local investigation. With impeccable timing, Hercule Poirot, the famous Belgian detective, makes his dramatic entrance into the pages of crime literature.

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.

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.

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?