Dame Agatha Mary Clarissa Christie DBE (née Miller; 15 September 1890 – 12 January 1976) was a British crime writer of novels, short stories, and plays. She also wrote romances under the name Mary Westmacott, but she is best remembered for her 66 detective novels and more than 15 short story collections (especially those featuring Hercule Poirot or Miss Jane Marple), and her successful West End plays.
According to the Guinness Book of World Records, Christie is the best-selling novelist of all time. Her novels have sold roughly four billion copies, and her estate claims that her works rank third, after those of William Shakespeare and the Bible, as the most widely published books. According to Index Translationum, Christie is the most translated individual author, with only the collective corporate works of Walt Disney Productions surpassing her. Her books have been translated into at least 103 languages

While the Light Lasts**
Unexpected Guest**
The Hound of Death**
The Adventure of the Christmas Pudding and Other Stories**
Problem at Pollensa Bay**
Miss Marple: The Complete Short Stories**
Listerdale Mystery**
Hercule Poirot's Early Cases**
Hercule Poirot's Casebook**
An Autobiography **
The ABC Murders 
Murder on the Orient Express
The Murder at the Vicarage
The Regatta Mystery and Other Stories: Featuring Hercule Poirot, Miss Marple, and Mr. Parker Pyne
The Body in the Library
The Moving Finger
A Murder Is Announced: A Miss Marple Mystery
They Do It With Mirrors
A Pocket Full of Rye
4:50 From Paddington
The Mirror Crack'd From Side to Side: A Miss Marple Mystery
A Caribbean Mystery: A Miss Marple Mystery
At Bertram's Hotel
Nemesis
Sleeping Murder: Miss Marple's Last Case
The Thirteen Problems
Miss Marple's Final Cases: And Two Other Stories
Towards Zero
The Seven Dials Mystery
The Secret of Chimneys
Murder Is Easy
The Secret Adversary: A Tommy & Tuppence Adventure
Postern of Fate
By the Pricking of My Thumbs:
N or M?
Partners in Crime: A Tommy & Tuppence Adventure
Parker Pyne Investigates: A Short Story Collection
The Pale Horse
The Mysterious Affair at Styles
The Murder on the Links: A Hercule Poirot Mystery
Poirot Investigates: Hercule Poirot Investigates
The Murder of Roger Ackroyd: A Hercule Poirot Mystery
The Big Four: A Hercule Poirot Mystery
The Mystery of the Blue Train: Hercule Poirot Investigates
Peril at End House
Lord Edgware Dies: A Hercule Poirot Mystery
Three Act Tragedy: A Hercule Poirot Mystery
Death in the Clouds: A Hercule Poirot Mystery
Curtain: Poirot's Last Case: Hercule Poirot Investigates
Elephants Can Remember
Hallowe'en Party: A Hercule Poirot Mystery
Third Girl
The Clocks: A Hercule Poirot Mystery
Cat Among the Pigeons: A Hercule Poirot Mystery
Dead Man's Folly: Hercule Poirot Investigates
Hickory Dickory Dock: A Hercule Poirot Mystery
After the Funeral: A Hercule Poirot Mystery
Mrs. McGinty's Dead: Hercule Poirot Investigates
Taken at the Flood: Hercule Poirot Investigates
The Labours of Hercules: Hercule Poirot Investigates
The Hollow: A Hercule Poirot Mystery
Five Little Pigs: A Hercule Poirot Mystery
Evil Under the Sun: A Hercule Poirot Mystery
One, Two, Buckle My Shoe: A Hercule Poirot Mystery
Sad Cypress: Hercule Poirot Investigates
Hercule Poirot's Christmas: A Hercule Poirot Mystery
Appointment With Death: A Hercule Poirot Mystery
Murder in the Mews: Four Cases of Hercule Poirot
Dumb Witness: A Hercule Poirot Mystery
Death on the Nile: Hercule Poirot Investigates
Murder in Mesopotamia
Cards on the Table: A Hercule Poirot Mystery
Three Blind Mice and Other Stories
The Witness for the Prosecution and Other Stories
Double Sin and Other Stories
The Under Dog and Other Stories
The Golden Ball and Other Stories
Black Coffee
The Unexpected Guest
Spider's Web
Why Didn't They Ask Evans?
Passenger to Frankfurt
The Harlequin Tea Set and Other Stories
The Mysterious Mr. Quin: A Short Story Collection
Destination Unknown
Death Comes as the End
Ordeal by Innocence
The Sittaford Mystery
They Came to Baghdad
Endless Night
Sparkling Cyanide
The Man in the Brown Suit
Crooked House
And Then There Were None

All Books are full Retail unless noted by the 2 stars (**) which aren't available in retailed digital format.