Hercule Poirot:
* The Mysterious Affair at Styles (1920): Poirot's debut novel, introducing the famous detective and setting the stage for his many future investigations.
* The Murder on the Links (1923): A classic Poirot mystery set in France, featuring a thrilling golf course murder.
* Murder on the Orient Express (1934): One of Christie's most famous and beloved novels, a locked-room mystery set on a luxury train.
* Death on the Nile (1937): Another iconic Poirot novel, this time set on a cruise ship on the Nile River, with murder and betrayal in the heart of ancient Egypt.
* And Then There Were None (1939): A suspenseful story featuring ten strangers invited to a remote island, only to find themselves trapped in a deadly game.
* The ABC Murders (1936): Poirot investigates a series of seemingly unconnected murders linked by an alphabet.
* The Big Four (1927): Poirot confronts a secret criminal organization called "The Big Four".
Miss Marple:
* The Murder at the Vicarage (1930): Miss Marple's debut novel, showcasing her keen observation skills and knowledge of human nature.
* The Body in the Library (1942): The first novel to feature Miss Marple as the central character, a classic whodunit with a shocking murder.
* A Murder is Announced (1950): Miss Marple investigates a seemingly staged murder that quickly turns real.
* The Mirror Crack'd from Side to Side (1962): A chilling story involving a mirror that reflects a deadly secret.
* Sleeping Murder (1976): The final Miss Marple novel, published posthumously, explores a long-forgotten murder.
Other Notable Works:
* The Secret Adversary (1922): A spy thriller featuring Tommy and Tuppence Beresford, who become recurring characters in several novels.
* The Case of the Missing Will (1930): A captivating mystery involving a missing will and a web of deceit.
* The Clocks (1963): A complex and intriguing puzzle with a unique set of characters and clues.
* Ten Little Indians (1939): This novel is also known as "And Then There Were None" in the US. It is a classic thriller with a chilling twist.
This is not an exhaustive list, but it highlights some of Agatha Christie's most celebrated and enduring works. Her legacy continues to inspire writers and readers around the world, making her one of the most popular and successful mystery authors of all time.