(Detektiv-)romaner & Novellsamlingar

1920-talet

1921:

The Mysterious Affair at Styles 1921

1922:

The Secret Adversary 1922
Originalutgåvan är även utgiven i ett särskilt band.

1923:

The Murder on the Links 1923

1924:

Poirot Investigates 1924

The Man in the Brown Suit 1924

1925:

The Road of Dreams 1925

The Secret of Chimneys 1925

1926:

The Murder of Roger Ackroyd 1926

1927:

The Big Four 1927¹

1928:

The Mystery of the Blue Train 1928

1929:

The Seven Dials Mystery 1929

Partners in Crime 1929

¹ Utgiven i novellversionen under titeln The Big Four (The Man Who Was Number Four) (2016).