The sergeant spread Tucker's discarded coat over Mark's body and stood beside it, waiting for the ambulance to come up. Tucker began to stammer out an explanation and was sternly checked. "We'll hear all about that up at the station," said the sergeant.

It was very cold on the road, and the mist spread a depressing dampness. The valet was shivering in the back of the car, his pale eyes fixed on the dead man. He raised them to the sergeant's face for a moment. "And," said the sergeant afterwards to Mr. Amberley, "say what you like, if ever a man looked like murder it was him. Dived in to rescue him, did he? Dived in to push him under, more likely. I tell you, sir, when I caught his eye he was looking like a fiend. And I'm not exaggerating neither."

The hand-ambulance came up at last, and Mark's body was lifted on to it and covered with a rug. The two policemen who had brought it set off with it towards the mortuary, and the sergeant climbed into Amberley's car again.

The drive back to the police station was accomplished in silence. When they arrived Collins was sent off under escort to get a change of clothing, and Tucker and Amberley went off with the sergeant into his office.

Tucker's account of the accident was necessarily incomplete, as he had not been near enough to witness it. In obedience to his instructions he had followed Mark to the Blue Dragon earlier in the evening and had hung about outside for some time. He had looked in after a while and observed that Mark was, as usual, sitting at a table in the corner in a kind of huddle, too drunk to get up to any mischief. He had understood from the inspector that Mr. Amberley suspected Brown of meaning to do something that would have some connection with Dawson's murder; he had not thought that in that fuddled state the boy could need much watching. Besides, he never came out till closing-time. He had only gone a few steps up the road to get himself a cup of hot tea, and he had not imagined any harm would come of sitting for a bit in the warm and having a chat with the man who kept the eating-house. He had returned to his post only a few minutes after closing-time to find that Mark had already set out for home. He followed, not that he had seen much sense in it, but those had been his orders. Brown must have left the Blue Dragon before it closed, for although he had walked along at a brisk pace he had not caught up with him. It was just as he had approached the bend in the road that brought it alongside the river that he had heard someone shouting for help. He had broken into a run and arrived on the scene of the accident just in time to see Collins, obviously in an exhausted condition, drag Brown's body up the bank, turn it onto its face, and start to apply artificial respiration. He had joined him at once; they had worked like niggers to bring the young man back to life. He himself had felt sure after ten minutes that it was too late, but Collins cursed him and made him go on. Collins had kept on panting that the boy hadn't been under long enough to be drowned, that they must bring him back to life. But they had not succeeded in getting so much as a flicker out of Mark.

It was Tucker who had stopped the first car that passed them. He had not liked to leave Collins with the body and he had told the owner of the car, who was Mr. Jarrold, from Collinghurst, to ring up the police station and deliver a message.

Tucker told his story straightforwardly, but took care not to look at Mr. Amberley. It was plain that he expected censure, for he said several times that the inspector had never told him that Brown was not to be let out of his sight.

"You're a fool," said the sergeant, and rang for Collins to be brought in.

The valet had been fitted out with a suit of clothes only a little too large for him, and given a hot tot. The grey shade had left his face, and his eyes, which the sergeant had thought murderous, were as cold and as expressionless as ever.

He recounted his share in the night's happenings quite composedly. He had been some little way behind Brown, whom he had just been able to see lurching along through the mist. The young gentleman seemed very intoxicated; several times he had stumbled and he had not been able to keep a straight course. So erratic had been his footsteps that Collins had hurried to come up with him, fearing that some car, its driver unable to see clearly in the fog, might run him over. It had been equally hard for him to see clearly, though he had had his torch in his hand. They must have noticed that the fog was particularly thick down there in the hollow where the road ran immediately beside the river. He thought the boy must have wandered off it and stumbled over the edge of the bank. He had seen him disappear and heard him cry out as he fell. There had been a splash, and he had at once run to the spot where he had last seen the young gentleman. He had shouted to him, but there was no answer; not a sound. Knowing in what condition the gentleman was, he had feared that he would not be able to swim to shore. He had thought it his duty to go in after him and he had done so, only stopping to take off his coat and boots. He had dived in and swum about for what seemed hours. He thought the gentleman must have sunk at once; if he struggled at all it could not have been for long, since there was nothing but silence when he, Collins, entered the water. He had almost despaired of bringing him up when he had grasped something in the water and knew it for a hand. He was not a great swimmer, but he had managed to get the body to the bank and to drag it up on to the road again. He had shouted several times for help, as he himself was exhausted and had hardly enough strength to apply artificial respiration. He had done the best he could until Tucker came up; he thought that Tucker would bear him out over that.