(Detektiv-)romaner & Novellsamlingar
1920-talet
1920:
The Mysterious Affair at Styles 1920
1922:
The Secret Adversary 1922
1923:
The Murder on the Links 1923
1924:
The Man in the Brown Suit 1924
1925:
Poirot Investigates 1925
The Secret of Chimneys 1925
1926:
The Murder of Roger Ackroyd 1926
1927:
The Big Four 1927
1928:
The Mystery of the Blue Train 1928
1929:
The Seven Dials Mystery 1929
Partners in Crime 1929