Among the towering red cliffs of Petra, like some monstrous swollen Buddha, sat the corpse of Mrs Boynton. A tiny puncture mark on her wrist was the only sign of the fatal injection that had killed her. With only 24 hours available to solve the mystery, Hercule Poirot recalled a chance remark he"d overheard back in Jerusalem: "You see, don"t you, that she"s got to be killed?" Mrs Boynton was, indeed, the most detestable woman he"d ever met...