The Big Four (novel)

The Big Four
Dust-jacket illustration of the first UK edition
AuthorAgatha Christie
Cover artistThomas Derrick
LanguageEnglish
SeriesHercule Poirot
GenreCrime novel
PublisherWilliam Collins & Sons
Publication date
27 January 1927
Publication placeUnited Kingdom
Media typePrint (hardback & paperback)
Pages282 (first edition, hardback)
Preceded byThe Murder of Roger Ackroyd 
Followed byThe Mystery of the Blue Train 
TextThe Big Four at Wikisource

The Big Four is a work of detective fiction by Agatha Christie, first published in the UK by William Collins & Sons on 27 January 1927 and in the US by Dodd, Mead and Company later in the same year. It features Hercule Poirot, Arthur Hastings, and Inspector Japp. The UK edition retailed at seven shillings and sixpence (7/6) and the US edition at $2.00.

The structure of the novel is different from other Poirot stories, as it began from twelve short stories (eleven in the US) that had been separately published. This is a tale of international intrigue and espionage, therefore opening up the possibility of more spy fiction from Christie.:24