“The happiness of one man and one woman is the greatest thing in all the world.”
Agatha Christie book The Mysterious Affair at Styles
The Mysterious Affair at Styles (1920)

The Mysterious Affair at Styles is a detective novel by British writer Agatha Christie. It was written in the middle of the First World War, in 1916, and first published by John Lane in the United States in October 1920 and in the United Kingdom by The Bodley Head on 21 January 1921.Styles was Christie's first published novel. It introduced Hercule Poirot, Inspector Japp, and Arthur Hastings. Poirot, a Belgian refugee of the Great War, is settling in England near the home of Emily Inglethorp, who helped him to his new life. His friend Hastings arrives as a guest at her home. When the woman is killed, Poirot uses his detective skills to solve the mystery.
“The happiness of one man and one woman is the greatest thing in all the world.”
Agatha Christie book The Mysterious Affair at Styles
The Mysterious Affair at Styles (1920)
“Everything must be taken into account. If the fact will not fit the theory — let the theory go.”
Agatha Christie book The Mysterious Affair at Styles
Source: The Mysterious Affair at Styles (1920)
“Every murderer is probably somebody’s old friend.”
Agatha Christie book The Mysterious Affair at Styles
Hercule Poirot
Source: The Mysterious Affair at Styles (1920)
“Never do I deceive you, Hastings. I only permit you to deceive yourself.”
Agatha Christie book The Mysterious Affair at Styles
Hercule Poirot’s Early Cases (1974)
Source: The Mysterious Affair at Styles
“When you find that people are not telling you the truth---look out!”
Agatha Christie book The Mysterious Affair at Styles
Source: The Mysterious Affair at Styles
“Instinct is a marvelous thing. It can neither be explained nor ignored.”
Agatha Christie book The Mysterious Affair at Styles
Source: The Mysterious Affair at Styles
“An appreciative listener is always stimulating.”
Agatha Christie book The Mysterious Affair at Styles
Source: The Mysterious Affair at Styles
“They tried to be too clever---and that was their undoing.”
Agatha Christie book The Mysterious Affair at Styles
Source: The Mysterious Affair at Styles
Agatha Christie book The Mysterious Affair at Styles
Captain Arthur Hastings, first paragraph
The Mysterious Affair at Styles (1920)
“Ah, my friend, one may live in a big house and yet have no comfort.”
Agatha Christie book The Mysterious Affair at Styles
The Mysterious Affair at Styles (1920)
Agatha Christie book The Mysterious Affair at Styles
Hercule Poirot
The Mysterious Affair at Styles (1920)
Agatha Christie book The Mysterious Affair at Styles
Hercule Poirot
The Mysterious Affair at Styles (1920)
“Now there is no murder without a motive.”
Agatha Christie book The Mysterious Affair at Styles
The Mysterious Affair at Styles (1920)