Anthony swore solemnly that nothing should prevent his keeping the engagement. Satisfied, the youthful pair beat a retreat towards the house. Anthony stood for a minute looking after them, and, as he did so, he became aware of a man leaving the other side of a little copse of trees and hurrying away across the park. He felt almost sure that it was the same black-bearded stranger he had encountered that morning. Whilst he was hesitating whether to go after him or not the trees just ahead of him were parted and Mr. Hiram Fish stepped out into the open. He stared slightly when he saw Anthony.

“A peaceful afternoon, Mr. Fish?” inquired the latter.

“I thank you, yes.”

Mr. Fish did not look as peaceful as usual, however. His face was flushed, and he was breathing hard as though he had been running. He drew out his watch and consulted it.

“I guess,” he said softly, “it’s just about time for your British institution of afternoon tea.”

Closing his watch with a snap, Mr. Fish ambled gently away in the direction of the house.

Anthony stood in a brown study and awoke with a start to the fact that Superintendent Battle was standing beside him. Not the faintest sound had heralded his approach, and he seemed literally to have materialized from space.

“Where did you spring from?” asked Anthony irritably.

With a slight jerk of his head, Battle indicated the little copse of trees behind them.

“It seems a popular spot this afternoon,” remarked Anthony.