"It is the time," he breathed as he crept back to his place. "Listen now!"

A minute passed and another. Frobisher found himself shivering as a man shivers at a photographer's when he is told by the operator to keep still. He had a notion that he was going to fall. Then a distant noise caught his ear, and at once his nerves grew steady. It was the throb of a motor-cycle, and it grew louder and louder. He felt Hanaud stiffen at his side. Hanaud had been right, then! The conviction deepened in his mind. When all had been darkness and confusion to him, Hanaud from the first had seen clearly. But what had he seen? Frobisher was still unable to answer that question, and whilst he fumbled amongst conjectures a vast relief swept over him. For the noise of the cycle had ceased altogether. It had roared through some contiguous street and gone upon its way into the open country. Not the faintest pulsation of its engine was any longer audible. That late-faring traveller had taken Dijon in his stride.

In a revulsion of relief he pictured him devouring the road, the glow of his lamp putting the stars to shame, the miles leaping away behind him; and suddenly the pleasant picture was struck from before his vision and his heart fluttered up into his throat. For the leaf of the great coach-door was swung wider, and closed again, and the motor-cycle with its side-car was within the courtyard. The rider had slipped out his clutch and stopped his engine more than a hundred yards away in the other street. His own impetus had been enough and more than enough to swing him round the corner along the road and into the courtyard. The man who had closed the door moved to his side as he dismounted. Between them they lifted something from the side-car and laid it on the ground. The watchman held open the door again, the cyclist wheeled out his machine, the door was closed, a key turned in the lock. Not a word had been spoken, not an unnecessary movement made. It had all happened within the space of a few seconds. The man waited by the gate, and in a little while from some other street the cyclist's engine was heard once more to throb. His work was done.

Jim Frobisher wondered that Hanaud should let him go. But Hanaud had eyes for no one but the man who was left behind and the big package upon the ground under the blank side wall. The man moved to it, stooped, raised it with an appearance of effort, then stood upright holding it in his arms. It was something shapeless and long and heavy. So much the watchers in the gallery could see, but no more.

The man in the courtyard moved towards the door without a sound; and Hanaud drew his companions back from the window of the broken shutter. Quick as they were, they were only just in time to escape from that revealing twilight. Already the intruder with his burden stood within the gallery. The front door was unlatched, that was clear. It had needed but a touch to open it. The intruder moved without a sound to the double door, of which Hanaud had opened one leaf. He stood in front of it, pushed it with his foot and both the leaves swung inwards. He disappeared into the room. But the faint misty light had fallen upon him for a second, and though none could imagine who he was, they all three saw that what he carried was a heavy sack.

Now, at all events, Hanaud would move, thought Frobisher. But he did not. They all heard the man now, but not his footsteps. It was just the brushing of his clothes against furniture: then came a soft, almost inaudible sound, as though he had laid his burden down upon the deep-cushioned couch: then he himself reappeared in the doorway, his arms empty, his hat pressed down upon his forehead, and a dim whiteness where his face should be. But dark as it was, they saw the glitter of his eyes.

"It will be now," Frobisher said to himself, expecting that Hanaud would leap from the gloom and bear the intruder to the ground.

But this man, too, Hanaud let go. He closed the doors again, drawing the two leaves together, and stole from the gallery. No one heard the outer door close, but with a startling loudness some metal thing rang upon stone, and within the house. Even Jim Frobisher understood that the outer door had been locked and the key dropped through the letter slot. The three men crept back to their window. They saw the intruder cross the courtyard, open one leaf of the coach door, peer this way and that and go. Again a key tinkled upon stones. The key of the great door had been pushed or kicked underneath it back into the courtyard. The clocks suddenly chimed the quarter. To Frobisher's amazement it was a quarter-past twelve. Between the moment when the cyclist rode his car in at the doors and now, just five minutes had elapsed. And again, but for the three men, the house was empty.

Or was it empty?

For Hanaud had slipped across to the door of the room and opened it; and a slight sound broke out of that black room, as of some living thing which moved uneasily. At Jim Frobisher's elbow Hanaud breathed a sigh of relief. Something, it seemed, had happened for which he had hardly dared to hope; some great dread he knew with certainty had not been fulfilled. On the heels of that sigh a sharp loud click rang out, the release of a spring, the withdrawal of a bolt. Hanaud drew the door swiftly to and the three men fell back. Some one had somehow entered that room, some one was moving quietly about it. From the corner of the corridor in which they had taken refuge, the three men saw the leaves of the door swing very slowly in upon their hinges. Some one appeared upon the threshold, and stood motionless, listening, and after a few seconds advanced across the gallery to the window. It was a girl—so much they could determine from the contour of her head and the slim neck. To the surprise of those three a second shadow flitted to her side. Both of them peered from the window into the courtyard. There was nothing to tell them there whether the midnight visitors had come and gone or not yet come at all. One of them whispered: