Agatha Christie, known as the Queen of Crime, revealed her ten favorite books in a letter to a fan in 1972.

Among her favorites, Christie listed titles such as 'Endless Night', 'Murder on the Orient Express', and 'Ordeal By Innocence'.

Her complete list includes: 1) And Then There Were None, 2) The Murder of Roger Ackroyd, 3) A Murder is Announced, 4) Murder on the Orient Express, 5) The Thirteen Problems, 6) Towards Zero, 7) Endless Night, 8) Crooked House, 9) Ordeal By Innocence, and 10) The Moving Finger.

Interestingly, Christie's immensely popular novel 'Death on the Nile', published in 1937 and featuring the iconic detective Hercule Poirot, was notably absent from her personal favorites list.

Inspired by her travels in Egypt, 'Death on the Nile' has remained a significant work in her oeuvre.

In 2022, 'Death on the Nile' was adapted into a film starring Kenneth Branagh as Poirot.

Christie's prolific career includes 75 novels, with 66 classified as detective fiction, establishing her as the best-selling novelist in history, second only to the Bible and Shakespeare.