If it proved to be real—

He trembled at the thought; but making a brave effort, he well bathed his aching temples with cold water, and went down to the evening meal, made a show of eating, and then excused himself on the plea of a very bad headache, got up, and was leaving the room, when, to his horror, Andrew joined him.

“Here,” he said, “I don’t like to see you in this way. I helped to give you this headache. Let’s go and have a walk up and down the courtyard.”

“No, don’t you come,” said Frank, so earnestly that Andrew gave way and drew back.

“Very well,” he said. “Go and lie down for a bit; you’ll be better then.”

Frank made as if to go to his room, but took his hat and cloak and slipped out, forcing himself to cross the courtyard calmly and walk carelessly by the sentries, turning off directly after in the opposite direction to that in which he wished to go, and without seeming to pay any attention kept his eyes travelling in all directions in search of the man they had seen in the afternoon.

But he was nowhere visible, and to make more sure the lad took off his hat to fan himself, the evening being warm, and in so doing purposely dropped his glove, so that in stooping to recover it he could give a good look to the rear to see whether he was followed.

But there was no one suspicious-looking in sight, and, taking advantage of the darkness of the soft, warm evening, he began to walk more sharply, going through the Park till he was opposite to the house, and after glancing to right and left, to make sure that he was not observed, he began to examine it carefully. Those to right and left had several windows illumined, but his old London home was all in complete darkness, though he felt that if he went round to the street front he would see a light in the housekeeper’s room.

Dark, everywhere dark; no gleam showing anywhere, not even at the window upon which his eyes had last rested when he was there that afternoon.

“Fancy,” he thought; and he breathed more freely. “Yes, it must have been fancy.”