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, 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.

Hercule Poirot and Lord Peter Whimsey ( the respective creations of Agatha Christie and Dorothy Sayers ) have retained Holmes' egotism but not his zest for life and eccentric habits.

Hercule Poirot (; ) is a fictional Belgian detective, created by Agatha Christie.

By 1930, Agatha Christie found Poirot " insufferable ", and by 1960 she felt that he was a " detestable, bombastic, tiresome, ego-centric little creep ".

This is how Agatha Christie describes Poirot in The Murder on the Orient Express in the initial pages:

On 22 February 1945, " speaking from London, Agatha Christie introduced the initial broadcast of the Poirot series via shortwave.

The character of Jessica Fletcher is thought to be based on a combination of Miss Marple, Agatha Christie herself, and another Christie character, Ariadne Oliver, who often appears in the Hercule Poirot mysteries.

Many of the most popular books of the Golden Age were written by Agatha Christie, who produced a long series of books featuring her detectives Hercule Poirot and Miss Marple, amongst others, and usually including a complex puzzle for the reader to try to unravel.

Clouseau's immense ego, eccentricity, embellished French accent and mustache were derived from Hercule Poirot, the famous fictional Belgian detective that featured in the novels of Agatha Christie.

Burgh Island is closely linked to Agatha Christie, as it served as the inspirational setting for both And Then There Were None as well as the Hercule Poirot mystery Evil Under the Sun. The hotel and its eloquent Art Deco styling was also a bolt hole in the 1930s for the likes of London's rich and famous, including Noël Coward.

* Agatha Christie's The Mysterious Affair at Styles ( 1920 ) introduces Hercule Poirot.

Detective Chief Inspector James Harold Japp is a fictional character who appears in several of Agatha Christie's novels featuring Hercule Poirot.

Like those of Miss Lemon and Arthur Hastings, the role of Inspector Japp in Poirot's career has been exaggerated by adaptations of Christie's original novels ; specifically by the TV series Agatha Christie's Poirot, where these characters are often introduced into stories that did not originally feature them.

The role of Japp is played by Philip Jackson in the British TV series Agatha Christie's Poirot, where Hercule Poirot's character is played by David Suchet.

* Inspector Japp at the official Agatha Christie website

* Philip Jackson, actor best known for his role as Chief Inspector Japp in the television series Agatha Christie's Poirot.

A television adaptation, starring David Suchet as Poirot ; Philip Jackson as Inspector Japp ; Pauline Moran as Miss Lemon ; Sarah Badel as Mrs Hubbard ; Elinor Morriston as Valerie Hobhouse and Jonathan Firth as Nigel Chapman, was broadcast in 1995 in the series Agatha Christie's Poirot.

All of the stories contained in Poirot Investigates have been adapted as episodes in the ITV television series Agatha Christie's Poirot with David Suchet in the role of Poirot, Hugh Fraser as Hastings, Philip Jackson as Japp and Pauline Moran as Miss Lemon.

Seventeen of the eighteen stories in the collection have been adapted for episodes in the ITV series Agatha Christie's Poirot with David Suchet in the role of Poirot, Hugh Fraser as Hastings, Philip Jackson as Japp and Pauline Moran as Miss Lemon.

In 1971 Agatha Christie was made a Dame Commander of the Most Excellent Order of the British Empire.

Agatha Christie attributed the inspiration for the character of Miss Marple to a number of sources: Miss Marple was " the sort of old lady who would have been rather like some of my grandmother's Ealing cronies – old ladies whom I have met in so many villages where I have gone to stay as a girl ".

In the 1940s, Joan appeared on-stage in an Agatha Christie play, Appointment with Death, which was seen by Christie who wrote in a note to her, " I hope one day you will play my dear Miss Marple ".

Greenway was subsequently the home of Dame Agatha Christie.

Phillpotts was a friend of Agatha Christie, who was an admirer of his work and a regular visitor to his home.

In May 2010, another piping feature, which was larger than a street intersection, developed after Tropical Storm Agatha.

One of these visitors was the already famous Agatha Christie who as a result of this visit became the wife of Max Mallowan.

Bix Beiderbecke was born on March 10, 1903, in Davenport, Iowa, the son of Bismark Herman and Agatha Jane ( Hilton ) Beiderbecke.

His next film, Michael Apted's Agatha, was with Vanessa Redgrave as Agatha Christie.

His mother was Agatha, who was described as a relative of the German Emperor, but whose exact identity is unknown.

It was fate, however, that the treasure of the basilica still pass from hand to hand as a pledge as security for loans received: in 1273 is held at the Humble of St. Agatha ( the present church Carrobiolo ) in Monza in 1311 and is engaged in some bankers that safety will transfer to Avignon.

* Hatfield House was featured as " Chimneys " in the 2010 Agatha Christie's Marple adaptation of Agatha Christie's The Secret of Chimneys.