“Yes and no,” said Crewe. “Certainly its course was deflected downwards after hitting the cherry-tree—I assume that Jauncey was close to the tree. But if it had not been travelling downwards, it would have hit the tree much higher up—somewhere near the level of the window. The bullet that hit Jauncey was fired in the room in which we saw the body, but it was fired by the man who took the body to the farm, with the intention of giving the impression that the crime took place there. Knowing that the bullet which killed Lumsden had gone through his body, he placed the body in a chair near the window and then fired a shot through the window. He made the mistake of going close up to the window to fire, and as a result he fired downwards instead of on a level at the height of the wound in Lumsden’s body.”

“If that is all you have to support your theory——” began Detective Gillett.

“It isn’t all,” said Crewe, with a slight indication of impatience. “It is only my first point. You will recall that on the stairs there were indications that a wet rag had been used for wiping away some traces or stains. Inspector Payne suggested that the rag had been used to wipe away muddy boot-marks on the stairs—the traces of these boots. These boots were not worn by the man as he went upstairs; he put them on afterwards. Presently I will tell you why he did. But the marks on the stairs were not the marks of muddy boots. They were stains of blood which dropped from the dead man’s wound, as his body was carried upstairs. These marks are in the hall leading to the stairs and on the landing leading to the room in which the body was placed. In the room itself no attempt to remove the blood-stains was made, because they were an indication that the shooting took place there. If he had been aware that there was a stain of blood on the latch-key which he took from the dead man’s pocket, he would have washed it away.”

“If he had possession of the key in order to get the body into the house in the way you state, Mr. Crewe, why did he break into the house? Remember one of the downstairs windows was forced.”

“It was forced by the man who took the body there. But he forced it in breaking out of the house—not in breaking into it. He wanted to give the impression that some one had broken into the house, but he was pressed for time—he was anxious to get away. In searching for a rag in the kitchen with which to wipe out the blood-stains, he saw these boots. They belonged to Lumsden, as you have said, but it was more likely that Lumsden kept them in the kitchen than in the barn or cowshed. This man—let us call him the murderer—saw in the boots a means of averting suspicion from himself. He decided to leave clues that would suggest that the murderer broke into the house. But, instead of going out of the front door and breaking into the house, he forced the window from inside the room. Then, with these boots on, he climbed out of the window backwards, and when he reached the ground he walked backwards across the garden bed to the path in order to give the impression that some one had walked forwards across the bed to the window.

“You saw from the sash of the window that the catch had been forced back by a knife, but apparently you overlooked the fact that the marks of the knife are much broader at the top, where the catch is, than at the bottom, where the knife would enter if the catch had been forced by some one outside. It was at the top, near the catch, and not at the bottom below it, that the knife was inserted; that is to say, the knife was used by some one inside the room. The footprints outside the window showed that they were made by a person walking backwards; the impression from the toe to the ball of the foot being very distinct and the rest of the foot indistinct. A person in walking backwards puts down his toes first, and gradually brings the rest of his foot down; a person walking forwards puts his heel down first and then puts down the rest of his foot as he brings his weight forward. Our man, having made his way to the garden path from the window, walked along the path to the motor-car at the gate, probably carrying his own boots in his hand. As soon as he entered his car he drove off along the road in the direction of Staveley with the lights out. He took a risk in travelling in the dark, and in spite of the fact that he knew the road well he came to grief before he reached Staveley.”

“How do you know all this?” asked Gillett. “How do you know he had a car?” He had not given up his own theory in favour of Crewe’s, but he realized that Crewe’s theory was the more striking one.

“In Marsland’s statement he said that his horse swerved from something in the dark as he was coming down the Cliff road, and fell lame,” said Crewe. “The horse shied at the motor-car as it passed. Marsland neither saw nor heard the car because of the darkness, intensified by the storm, and because of the roar of the wind and waves.”

“You don’t really expect us to regard the swerving of the horse as proof there was a motor-car there?” demanded Gillett, with a superior smile.

“Contributory proof,” said Crewe. “If you went along the cliff road, as I did on leaving the farm after meeting you there, you would have noticed that the danger post nearest the farm was out of the perpendicular. That was not the case previous to the night of the storm. This motor-car without lights bumped into it. The mark of the wheels where the car had left the road was quite plain when I looked—it had not been obliterated by the rain. Four miles away the car was run into the ditch and overturned. I saw it as Sir George Granville and I drove along to Cliff Farm on Saturday morning. If you want information concerning it and the person who drove it you can obtain it at Gosford’s garage at Staveley. The car was hired from Gosford.”