To Hamilton it was evident that the man Krail, now smartly dressed in country tweeds, was telling the girl something which surprised her. He was speaking quickly, making involuntary gestures which betrayed his foreign birth, while she stood pale, surprised, and yet defiant. The Baron's secretary was not near enough to overhear their words. Indeed, he remained there in concealment in order to watch. Why had Gabrielle met Felix Krail--of all men? She was beautiful. Yes, there could be no two opinions upon that point, Edgar decided. And yet how strange it all was, how very remarkable, how romantic! The man was evidently endeavouring to impress upon the girl some plain truths to which, at first, she refused to listen. She shrugged her shoulders impatiently and swung her walking-stick before her in an attempt to remain unconcerned. But from where Hamilton was standing he could plainly detect her agitation. Whatever Krail had told her had caused her much nervous anxiety. What could it be? Across the meadows, beyond the river, could be seen the lantern-tower of old Fotheringhay church, with the mound behind where once stood the castle where ill-fated Mary met her doom. And as the Baron's secretary watched, he saw that the foreigner's attitude was gradually changing from persuasive to threatening. He was speaking quickly, probably in French, making wild gestures with his hands, while she had drawn back with an expression of alarm. She was now, it seemed, frightened at the man, and to Edgar Hamilton this increased the interest tenfold. Through his mind there flashed the recollection of a previous occasion when he had seen the man now before him. He was in different garb, and acting a very different part. But his face was still the same--a countenance which it was impossible to forget. He was watching the changing expression upon the girl's face. Would that he could read the secret hidden behind those wonderful eyes! He had, quite unexpectedly, discovered a mysterious circumstance. Why should Krail meet her by accident at that lonely spot? The pair moved very slowly together along the path which, having left the way to Southwick, ran along the very edge of the broad, winding river towards Fotheringhay. Until they had crossed the wide pasture-land and followed the bend of the stream Hamilton dare not emerge from his place of concealment. They might glance back and discover him. If so, then to watch Krail's movements further would be futile. He saw that, by the exercise of caution, he might perhaps learn something of deeper interest than he imagined. So he watched until they disappeared, and then sped along the path they had taken until he came to a clump of bushes which afforded further cover. From where he stood, however, he could see nothing. He could hear voices--a man's voice raised in distinct threats, and a woman's quick, defiant response.