Plans for England's new submarine have been stolen from the aspiring Prime Minister. Hercule Poirot is summoned to crack the case, but none of the witnesses' accounts are the same . . .

A classic mystery featuring legendary detective, Hercule Poirot.The story was first published as a book in the collection Poirot Investigates, 1924, by Bodley Head. The story was adapted for the TV series Agatha Christie’s Poirot in 1990, starring David Suchet, and like many of the other early episodes, included the characters of Hastings, Japp and Miss Lemon, regardless of whether or not they appeared in the original text. In 2004 it was adapted for the Japanese anime series Agatha Christie's Great Detectives, and retitled The Riddle of the Cheap Flat. The show saw Poirot teaming up with Miss Marple's great niece.

Mr Davenheim, a wealthy financier, leaves his home to mail a letter, then fails to return. The story fills the newspapers and intrigues Hercule Poirot, who challenges Inspector Japp that he can solve the case before the police, and without leaving his flat.

A classic Agatha Christie short story, available individually for the first time on audio.A woman leaves a fancy dress ball early and is later found to have died from a drugs overdose. Hercule Poirot investigates in this, the first story written about him.

Just as World War I is drawing to an end, the prime minister is kidnapped. It is down to Hercule Poirot to locate him before a crucial conference, to avert an international crisis.

Poirot investigates a murder in which the only clue is a box of chocolates. This case took place in Brussels early in his career when he was a detective with the police force there. Likely before the start of the Great War. As far as we are aware, this is the earliest Poirot case!