"Death on the Nile" is a classic detective novel written by Agatha Christie and first published in 1937. The story follows the investigation of Hercule Poirot, a Belgian detective, as he solves a murder mystery while on a luxurious Nile River cruise.

The novel begins with the introduction of the various characters aboard the boat, including the wealthy heiress Linnet Ridgeway and her new husband, Simon Doyle. The plot thickens when Linnet is found murdered in her cabin, and Poirot is called upon to investigate.

Poirot's investigation uncovers a web of secrets and motives among the passengers, including jilted lovers, inheritors, and a bitter former employee of Linnet's. As Poirot works to unravel the mystery, he becomes convinced that the solution lies in a seemingly innocent remark made by one of the passengers early on in the voyage.

As the investigation progresses, tensions rise, and the suspects become increasingly desperate to cover up their involvement in the murder. Poirot eventually identifies the killer and reveals their motive in a dramatic and satisfying conclusion.

"Death on the Nile" is a classic example of Christie's skill at crafting intricate plots and masterful twists. The novel is widely regarded as one of her best works and has been adapted for film and television multiple times.

The novel's popularity is due, in part, to its vivid descriptions of the Nile River and the exotic locales along its banks. Christie's descriptions of the Egyptian landscape and the social mores of the time make the setting as much a character as the passengers on the boat.

Overall, "Death on the Nile" is a classic whodunit that will keep readers guessing until the very end. Its memorable characters, intricate plot, and exotic setting make it a must-read for fans of mystery and detective novels.