In chapter 25, Hastings tells Donald Ross that Poirot has left for an appointment relating to his investigation of another case, “the strange disappearance of an Ambassador’s boots”.Lady Yardly had previously appeared in the short story, “The Adventure of the Western Star” from the Poirot Investigates collection. In chapter 19, the Duchess of Merton tells Poirot that Lady Yardly had told her about him.Nevertheless, the artefact was described in that novel as a piece of lead-piping only two feet long. This is probably a reference to a situation which occurred in The Murder on the Links, where Poirot found a piece of lead-piping which he concluded was used to disfigure the victim’s face so that it would be unrecognisable. In chapter 7, Poirot mentions that he once found a clue, but since it was four feet long instead of four centimetres, nobody would believe in it.

The superstition weighs heavily on young actor Donald Ross, but plays out for both him and Jane Wilkinson, and her impersonator. The dinner at which Carlotta successfully impersonated Jane Wilkinson had an unexpected missing guest, leaving them thirteen instead of the invited fourteen. This second title, used on American editions, arises from a superstition that sitting down thirteen to dinner means bad luck to the person who first leaves the table. Lord Edgware Dies is alternatively titled Thirteen at Dinner. By the next morning Lord Edgware and another American actress are found murdered, each at their own homes. That evening, the actress is seen at a dinner with thirteen guests, which has an associated superstition. Poirot agrees to help her, meeting her husband. An American actress married to Lord Edgware asks Poirot to aid her in getting a divorce from her husband. The novel features Hercule Poirot, Arthur Hastings and Chief Inspector Japp. The UK edition at eight shillings and sixpence (7/6) and the US edition retailed at $2.00.

Before its book publication, the novel was serialised in six issues (March–August 1933) of The American Magazine as 13 For Dinner.

Lord Edgware Dies is a work of detective fiction by British writer Agatha Christie, published in the UK by the Collins Crime Club in September 1933 and in the US by Dodd, Mead and Company later in the same year under the title of Thirteen at Dinner. Agatha Christie – Lord Edgware Dies 1933 UK

Lord edgware dies