Murder in the Mews (Hercule Poirot 18)

“I warned her,” he said. “Yes, I warned her . . . Up on the Mount of the Prophet . . . It was the only chance of averting the crime. I as good as told her that I suspected her. She understood. But she believed herself too clever . . . I told her to leave the island if she valued her life. She chose—to remain. . . .”