The Man who was Number Four: Further Adventures of M. Poirot is the collective title for a series of 12 short stories written by Agatha Christie and published in The Sketch from Jan - Mar 1924. These were subsequently adapted, with additional text into a novel and published in 1927 as the novel The Big Four. In 2017, these short stories were also published in their original form by HarperCollins as The Big Four (Detective Club Edition).
List of stories in the series[]
| Short story | Issue of Sketch and date |
|---|---|
| The Unexpected Guest | issue 1614, 2 January 1924 |
| The Adventure of the Dartmoor Bungalow | issue 1615, 9 January 1924 |
| The Lady on the Stairs | issue 1616, 16 January 1924 |
| The Radium Thieves | issue 1617, 23 January 1924 |
| In the House of the Enemy | issue 1618, 30 January 1924 |
| The Yellow Jasmine Mystery | issue 1619, 6 February 1924 |
| The Chess Problem | issue 1620, 13 February 1924 |
| The Baited Trap | issue 1621, 20 February 1924 |
| The Adventure of the Peroxide Blonde | issue 1622, 27 February 1924 |
| The Terrible Catastrophe | issue 1623, 5 March 1924 |
| The Dying Chinaman | issue 1624, 12 March 1924 |
| The Crag in the Dolomites | issue 1625, 19 March 1924 |