“He is like a cat. And all cats are thieves.”
Murder for Christmas (1939, Holiday for Murder, Hercule Poirot’s Christmas)
Dame Agatha Mary Clarissa Christie, Lady Mallowan, was an English writer known for her sixty-six detective novels and fourteen short story collections, particularly those revolving around fictional detectives Hercule Poirot and Miss Marple. She also wrote the world's longest-running play, The Mousetrap, which was performed in the West End from 1952 to 2020, as well as six novels under the pseudonym Mary Westmacott. In 1971, she was made a Dame for her contributions to literature. Guinness World Records lists Christie as the best-selling fiction writer of all time, her novels having sold more than two billion copies.
Christie was born into a wealthy upper-middle-class family in Torquay, Devon, and was largely home-schooled. She was initially an unsuccessful writer with six consecutive rejections, but this changed in 1920 when The Mysterious Affair at Styles, featuring detective Hercule Poirot, was published. Her first husband was Archibald Christie; they married in 1914 and had one child before divorcing in 1928. During both World Wars, she served in hospital dispensaries, acquiring a thorough knowledge of the poisons which featured in many of her novels, short stories, and plays. Following her marriage to archaeologist Max Mallowan in 1930, she spent several months each year on digs in the Middle East and used her first-hand knowledge of his profession in her fiction.
According to Index Translationum, she remains the most-translated individual author. Her novel And Then There Were None is one of the highest-selling books of all time, with approximately 100 million copies sold. Christie's stage play The Mousetrap holds the world record for the longest initial run. It opened at the Ambassadors Theatre in the West End of London on 25 November 1952, and by September 2018 there had been more than 27,500 performances. The play was closed down in March 2020 due to the coronavirus pandemic.
In 1955, Christie was the first recipient of the Mystery Writers of America's Grand Master Award. Later that year, Witness for the Prosecution received an Edgar Award for best play. In 2013, she was voted the best crime writer and The Murder of Roger Ackroyd the best crime novel ever by 600 professional novelists of the Crime Writers' Association. In September 2015, And Then There Were None was named the "World's Favourite Christie" in a vote sponsored by the author's estate. Most of Christie's books and short stories have been adapted for television, radio, video games, and graphic novels. More than thirty feature films are based on her work. Wikipedia

“He is like a cat. And all cats are thieves.”
Murder for Christmas (1939, Holiday for Murder, Hercule Poirot’s Christmas)
““You do well. Method and order, they are everything,” replied Poirot.”
Agatha Christie book Death on the Nile
Death on the Nile (1937)
Agatha Christie book Endless Night
Michael Rogers (the narrator)
Endless Night (1967)
Agatha Christie book The Labours of Hercules
The Labours of Hercules (1967)
Agatha Christie book Murder in Mesopotamia
Amy Leatheran
Murder in Mesopotamia (1936)
“These little things are very significant.”
Agatha Christie book Sleeping Murder
Sleeping Murder (1976)
“John, forgive me… for what I can't help doing.”
Henrietta Savernake
The Hollow (1946)
“It was a very British and utterly unconvincing performance.”
Agatha Christie book Death on the Nile
Death on the Nile (1937)
Agatha Christie book Murder on the Orient Express
Murder on the Orient Express (1934)
Agatha Christie book The Mystery of the Blue Train
Hercule Poirot
The Mystery of the Blue Train (1928)
Agatha Christie book Murder on the Orient Express
Hercule Poirot
Murder on the Orient Express (1934)
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 Murder in Mesopotamia
Amy Leatheran
Murder in Mesopotamia (1936)
Agatha Christie book Death on the Nile
Death on the Nile (1937)
Agatha Christie book The Mysterious Affair at Styles
Hercule Poirot
The Mysterious Affair at Styles (1920)
Murder for Christmas (1939, Holiday for Murder, Hercule Poirot’s Christmas)
Agatha Christie book After the Funeral
After the Funeral (1953)
“She shrugged her shoulders slightly.
“What can one do?”
“You are a philosopher, Mademoiselle.””
Agatha Christie book Murder on the Orient Express
Murder on the Orient Express (1934)
Agatha Christie book The Mystery of the Blue Train
The Mystery of the Blue Train (1928)
Agatha Christie book The Mysterious Affair at Styles
Hercule Poirot
The Mysterious Affair at Styles (1920)
“Murder isn’t — it really isn’t — a thing to tamper with lightheartedly.”
Agatha Christie book Sleeping Murder
Sleeping Murder (1976)
““It makes me madder than a hornet to be disbelieved,” she explained.”
Agatha Christie book Murder on the Orient Express
Murder on the Orient Express (1934)
“Harold Waring, like many other Englishmen, was a bad linguist.”
Agatha Christie book The Labours of Hercules
The Labours of Hercules (1967)
(1945)
Agatha Christie book Death in the Clouds
Death in the Clouds (1935)
“Now there is no murder without a motive.”
Agatha Christie book The Mysterious Affair at Styles
The Mysterious Affair at Styles (1920)