The Sign of Silence by William le Queux

I told Edwards nothing of Sir Digby's curious request, of his strange confidences, or of the mysterious letter to "E. P. K. ", which now reposed in a locked drawer in my writing-table.

My friend, be he impostor or not, had always treated me strictly honourably and well. Therefore, I did not intend to betray him, although he might be a fugitive hunted by the police.