I don't understand that, do you?
From the first moment when the lantern shone upon him from behind, to the last when he turned his feet eastward, and ran through the ruined alleys and broken walls toward the desert and the Wells of Obak, he felt no fear." This was the most mysterious part of Harry Feversham's story to Captain Willoughby.

Here was a man who so shrank from the possibilities of battle, that he must actually send in his papers rather than confront them; yet when he stood in dire and immediate peril he felt no fear.
Captain Willoughby might well turn to Ethne for an explanation.
There had been no mystery in it to Harry Feversham, but a great bitterness of spirit.

He had sat on the verandah at Suakin, whittling away at the edge of Captain Willoughby's table with the very knife which he had used in Berber to dig out the letters, and which had proved so handy a weapon when the lantern shone out behind him--the one glimmering point of light in that vast acreage of ruin.

Harry Feversham had kept it carefully uncleansed of blood; he had treasured it all through his flight across the two hundred and forty odd miles of desert into Suakin; it was, next to the white feathers, the thing which he held most precious of his possessions, and not merely because it would serve as a corroboration of his story to Captain Willoughby, but because the weapon enabled him to believe and realise it himself.

A brown clotted rust dulled the whole length of the blade, and often during the first two days and nights of his flight, when he travelled alone, hiding and running and hiding again, with the dread of pursuit always at his heels, he had taken the knife from his breast, and stared at it with incredulous eyes, and clutched it close to him like a thing of comfort.
He had lost his way amongst the sandhills of Obak on the evening of the second day, and had wandered vainly, with his small store of dates and water exhausted, until he had stumbled and lay prone, parched and famished and enfeebled, with the bitter knowledge that Abou Fatma and the Wells were somewhere within a mile of the spot on which he lay.