E-book exclusive extras:

1) Christie biographer Charles Osborne's essay on Murder in Mesopotamia

2) "The Poirots": the complete guide to all the cases of the great Belgian detective

Nurse Amy Leatheran had never felt the lure of the "mysterious East," but she nonetheless accepts an assignment at Hassanieh, an ancient site deep in the Iraqi desert, to care for the wife of a celebrated archaeologist. Mrs Leidner is suffering bizarre visions and nervous terror. "I'm afraid of being killed!" she admits to her nurse. Her terror, unfortunately, is anything but unfounded, and Nurse Leatheran is soon enough without a patient. The world’s greatest detective happens to be in the vicinity, however: having concluded an assignment in Syria, and curious about the dig at Hassanieh, Hercule Poirot arrives in time to lead a murder investigation that will tax even his remarkable powers — and in a part of the world that has seen more than its share of misadventure and foul play.