An uninvited guest appears in the doorway of Hercule Poirot’s bedroom, coated in dust from head to foot. He stares for a moment, sways and falls. All he leaves behind is a sheet of paper with the figure 4 written on it over and over.
The trail leads to the Big Four, a group with reach around the world. Poirot ends up risking his own life, and the life of a man he calls his twin brother, to find out who they are.
Trade paperback, 240 pages, published by William Morrow in August 2021.
Details
- Author: Agatha Christie
- Series: Hercule Poirot
- Publisher: William Morrow
- Format: Paperback
- Pages: 240
- Language: English
- ISBN-13: 9780063083790

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