“Not immediate,” replied Harry. “But—any time. And, as he’s fidgety about not being left, you’ll excuse me if I go back to him? If he seems a bit stronger tomorrow, I’ll tell him you’re home again, and no doubt you can see him when you look in. You’ll come again soon?”

“Surely!” said Harborough. He walked into the hall with Valencia when Harry had gone, and once more gave her an admonitory look. “You’ll not forget to send for me if I can ever give any help?” he continued. “I’m not to be treated as a mere neighbour, you know—now that I’m back!”

“I’ll not forget,” she answered. She glanced round: at the far end of the shadow-laden hall Braxfield was just appearing, key in hand; she motioned Harborough aside. “There’s something I want to ask you,” she whispered. “Have you any idea why my brother Guy left home, and why he’s never returned? You!—yourself?”

Her eyes, big and dark, were fixed upon him with a peculiar earnestness, and she saw him start a little and compress his lips.

“Tell—me!” she said. “Me!”

Harborough, too, glanced at Braxfield: the old butler, unconscious of this intimate question—and—answer, was drawing nearer.

“I may know—something,” murmured Harborough. “If—if I think—on reflection—I ought to tell you—I will. Later.”

She gave him an understanding nod, a whispered word of thanks, and went away up the dark staircase behind them. And Braxfield, after a word or two with Harborough, let the visitor out, and locked the big door, and drew across it a weighty chair which had done duty in that respect for many a generation of Markenmores. The house was secured for the night.

Braxfield went back to his pantry—a snug and comfortable sitting-room at the end of the big main corridor. There was a bright fire there, and his easy, well-cushioned arm-chair placed by it. Now was his time of rest and recreation. All done, all quiet, he would smoke his pipe, read the newspaper, and enjoy his glass of whisky. His pipe lay ready to hand: the newspaper flanked it; he went to the cupboard to get out his decanter and his glass. And just as he laid hands on these things, Braxfield heard a sound. His fingers relinquished their hold, dropped to his side, began to tremble. For Braxfield knew that sound—it was familiar enough to him, though it was seven years since he had heard it last. He stood, listening—it came again; a tap, light but firm, three times repeated on the pantry window. And at that he left the room, turned down a side-passage, and opened a door that admitted to the rose garden. A man stepped in, and in the dim light of a neighbouring lamp the butler saw his face.

“Good Lord ha’ mercy!” he exclaimed, shrinking back against the wall. “Mr. Guy?”