Almost all of Agatha Christie's books are whodunits, focusing on the British middle and upper classes.

Some of these have explored and offered accounts of Christie's disappearance in 1926, including the 1979 film Agatha ( with Vanessa Redgrave, where she sneaks away to plan revenge against her husband ) and the Doctor Who episode " The Unicorn and the Wasp " ( with Fenella Woolgar, her disappearance being the result of her suffering a temporary breakdown due to a brief psychic link being formed between her and an alien ).

The detective novelist Ariadne Oliver is Agatha Christie's humorous self-caricature.

In The Agatha Christie Hour, she was portrayed by British actress Angela Easterling, while in Agatha Christie's Poirot, she was portrayed by Pauline Moran.

In Agatha Christie's Poirot, Japp was portrayed by Philip Jackson.

In Agatha Christie's Poirot, George is played by actor David Yelland.

David Suchet has starred as the eponymous detective in Agatha Christie's Poirot in the ITV series since 1989.

In 2004, NHK ( Japanese public TV network ) produced a 39 episode anime series titled Agatha Christie's Great Detectives Poirot and Marple, as well as a manga series under the same title released in 2005.

Jane Marple, usually referred to as Miss Marple, is a fictional character appearing in twelve of Agatha Christie's crime novels and in twenty short stories.

In 1983, Estonian stage and film actress Ita Ever starred in the Russian language film adaptation of Agatha Christie's novel A Pocket Full of Rye ( using the Russian edition's translated title, The Secret of the Blackbirds ) as the character of Miss Marple.

Beginning in 2004, ITV broadcast a series of adaptations of Agatha Christie's books under the title Agatha Christie's Marple, usually referred to as Marple.

From 2004 to 2005, Japanese TV network NHK produced a 39 episode anime series titled Agatha Christie's Great Detectives Poirot and Marple, which features both Miss Marple and Hercule Poirot.

The same joke-translation is mentioned in Agatha Christie's Evil Under the Sun by Patrick Redfern to Hercule Poirot – a prank which inadvertently gives Poirot the answer to the murder.

* 1952 – Agatha Christie's murder-mystery play The Mousetrap opens at the Ambassadors Theatre in London later becoming the longest continuously-running play in history.

Agatha Christie's numerous mystery novels often referenced Scotland Yard, most notably in her Hercule Poirot series.

In Agatha Christie's Poirot series of books, Poirot often has a tisane and accounts this as being the reason why his " little grey cells " are superior to others.

* November 6 – Agatha Christie's mystery novel And Then There Were None is published in book form in the United States.

Agatha Christie's book Ten Little Niggers was first published in London in 1939 and continued to appear under that title until the early 1980s, when it became And Then There Were None.

In addition, Ten Little Niggers ( 1939 ) was the original British title of Agatha Christie's novel And Then There Were None, which has also been known by the alternate title Ten Little Indians.

During this period, one of his high-profile film roles was as Agatha Christie's Belgian master detective Hercule Poirot in the 1974 film Murder On The Orient Express.

In Agatha Christie's, " Appointment with Death " ( 1938 ), the mysterious and enigmatic Petra is the setting for a murder mystery featuring Hercule Poirot.

He then did pastoral work in the Bronx, and served as a chaplain at St. Agatha ’ s Home for Children until 1947.

He gave up acting for dancing in 1947 although he subsequently appeared in the fringe production, " Out of the Blue " ( Chichester ) and " Who Killed Agatha ' Christie " ( national tour ) amongst other acting credits.

The Labours of Hercules is a short story collection written by Agatha Christie and first published in the US by Dodd, Mead and Company in 1947 and in the UK by Collins Crime Club in September of the same year.

When she made it, the results, starring Margaret Rutherford, were popular and successful light comedies, but were disappointing to Christie herself ; nevertheless, Agatha Christie dedicated the novel The Mirror Crack'd from Side to Side to Rutherford.

* Nemesis ( Agatha Christie novel ), a 1971 detective novel

She also appeared in ITV's Marple: Ordeal By Innocence, based on the Agatha Christie novel.

:* 1928: Alibi adapted from the novel The Murder of Roger Ackroyd by Agatha Christie

:* 1932: The Fatal Alibi adapted from the novel The Murder of Roger Ackroyd by Agatha Christie

:* 1932: The Fatal Alibi adapted from the novel The Murder of Roger Ackroyd by Agatha Christie

* Cynthia Murdoch, character in Agatha Christie's 1916 mystery novel The Mysterious Affair at Styles

In the early 1980s Tutin also appeared in the made-for-television film Murder with Mirrors ( based on an Agatha Christie novel ) along with Helen Hayes and Bette Davis.

* The Big Four ( novel ), by Agatha Christie

In her 1953 novel, A Pocket Full of Rye, Agatha Christie used paresis as an explanation for the behavior of the victim.

With the exception of one short story, Suchet will have played the role in adaptations of every novel and short story featuring the character written by Dame Agatha Christie.

The title comes from Murder, She Said, which was the title of a 1961 film adaptation of Agatha Christie's Miss Marple novel 4: 50 from Paddington.

* Murder on the Orient Express ( 1974 ), ( 2001 ) and ( 2010 ): Film adaptations of the Agatha Christie novel.

* The Adventure Company developed a point-and-click adventure based on Agatha Christie's novel, Agatha Christie: Murder on the Orient Express.

* Agatha Christie publishes her first novel, The Mysterious Affair at Styles, introducing the long-running character detective, Hercule Poirot.

* In the epilogue to Agatha Christie's novel And Then There Were None, the author refers to the Mark of Cain in laying out the clues.

Cards on the Table is a detective novel by Agatha Christie and first published in the UK by the Collins Crime Club on November 2 1936 and in the US by Dodd, Mead and Company the following year

The Mysterious Affair at Styles is a detective novel by Agatha Christie.

George Thaw in the Daily Mirror of 22 October 1976 said, " Agatha Christie's last novel is very good.

* Destination Unknown ( novel ), a 1954 novel by Agatha Christie