He pointed to an impression in the red earth underneath Mr. Glenthorpe's window-a line so faint as to be barely noticeable, running outward from the wall for about eighteen inches, with another line about the same length running at right angles from it. Superintendent Galloway examined these two lines closely and then shook his head as though to intimate he could make nothing of them.

"What do you think they are?" said Mr. Cromering, turning to Colwyn.

"I think they may have been made by a box," was the reply.

"You are not suggesting that the murderer threw a box out of the window?" exclaimed Superintendent Galloway, staring at the detective. "Look how straight the line from the wall is! A box would have fallen crookedly."

"I do not suggest anything of the kind. If it was a box, it is more likely it was placed outside the window."

"For what purpose?"

"To help the murderer climb into the room."

"He didn't need it," replied Galloway. "It's an easy matter to get through this window from the ground. I can do it myself." He placed his hands on the sill, sprang on to the window ledge, and dropped back again. "I attach no importance to these lines. They are so faint that they might have been made months ago. There is nothing to be seen here, so we may as well go and look at the footprints. Show us where the marks of the footsteps commence, Queensmead."

The constable led the way to the other side of the house and across the green. The gra.s.s terminated a little distance from the inn in a clay bank bordering a wide tract of bare and sterile land, which extended almost to the summit of the rise. Clearly defined in the clay and the black soft earth were two sets of footprints, one going towards the rise, and the other returning. The outgoing footsteps were deeply and distinctly outlined from heel to toe. The right foot plainly showed the circular mark of a rubber heel, which was missing in the other, though a sharp indentation showed the mark of the spike to which the rubber had been fastened.

"The footprints lead straight to the mouth of the pit where the body was thrown," said Queensmead.

"What a clue!" exclaimed Superintendent Galloway, his eyes sparkling with excitement. "You are quite certain the inn servant can swear that these marks were made by Ronald's boots, Queensmead?"

"There's no doubt on that point, sir," replied the constable. "She had the boots in her hands this morning, just before Ronald put them on, and she distinctly noticed that there was a rubber heel on the right boot, but not on the other."

"It seems a strange thing for a young man of Ronald's position to have rubber heels affixed to his boots," remarked Mr. Cromering. "I was under the impression that they were an economical device of the working cla.s.ses. But perhaps he found them useful to save his feet from jarring."

"We shall find them useful to hang him," responded Galloway curtly. "Let us proceed to the pit, gentlemen. May I ask you to keep clear of the footprints? I do not want them obliterated before I can take plaster casts."

They followed the footsteps up the rise. Near the summit they disappeared in a growth of nettles, but reappeared on the other side, skirting a number of bowl-shaped depressions cl.u.s.tered in groups along the brow of the rise. These were the hut circles-the pit dwellings of the early Britons, shallow excavations from six to eight feet deep, all running into one another, and choked with a rank growth of weeds. Between them and a little wood which covered the rest of the summit was an open s.p.a.ce, with a hole gaping nakedly in the bare earth.

"That's the pit where the body was thrown," said Queensmead, walking to the brink.

The pit descended straight as a mining shaft until the sides disappeared in the interior gloom. It was impossible to guess at its depth because of the tangled creepers which lined its sides and obscured the view, but Mr. Cromering, speaking from his extensive knowledge of Norfolk geology, said it was fully thirty feet deep. He added that there was considerable difference of opinion among antiquaries to account for its greater depth. Some believed the pit was simply a larger specimen of the adjoining hut circles, running into a natural underground pa.s.sage which had previously existed. But the more generally accepted theory was that the hut circles marked the site of a prehistoric village, and the deeper pit had been the quarry from which the Neolithic men had obtained the flints of which they made their implements. These flints were imbedded in the chalk a long way from the surface, and to obtain them the cave men burrowed deeply into the clay, and then excavated horizontal galleries into the chalk. Several of the red-deer antler picks which they used for the purpose had been discovered when the pit was first explored twenty-five years ago.

"Mr. Glenthorpe was very much interested in the prehistoric and late Stone Age remains which are to be found in abundance along the Norfolk coast," he added. "He has enriched the national museums with a valuable collection of prehistoric man's implements and utensils, which he recovered in various parts of Norfolk. For some time past he had been carrying out explorations in this district in order to add to the collection. It is sad to think that he met his death while thus employed, and that his murdered body was thrown in the very pit which was, as it were, the centre of his explorations and the object of his keenest scientific curiosity."

"Did you ever see clearer footprints?" exclaimed the more practical-minded Galloway. "Look how deep they are near the edge of the pit, where the murderer braced himself to throw the body off his back into the hole. See! there is a spot of blood on the edge."

It was as he had said. The footprints were clear and distinct to the brink of the pit, but fainter as they turned away, showing that the man who had carried the body had stepped more lightly and easily after relieving himself of his terrible burden.

"I must take plaster casts of those prints before it rains," said Galloway. "They are far too valuable a piece of evidence to be lost. They form the final link in the case against Ronald."

"You regard the case as conclusive, then?" said Colwyn.

"Of course I do. It is now a simple matter to reconstruct the crime from beginning to end. Ronald got through Mr. Glenthorpe's window last night in the dark. As the catch has not been forced, he either found it unlocked or opened it with a knife. After getting into the room he walked towards the foot of the bed. He listened to make sure that Mr. Glenthorpe was asleep, and then struck the match I picked up near the foot of the bed, lit the candle he was carrying, put it on the table beside the bed, and stabbed the sleeping man. Having secured the money, he unlocked the door, carried the corpse out on his shoulder, closed the door behind him but did not lock it, then took the body downstairs, let himself out of the back door, carried it up here and cast it into the pit. That's how the murder was committed."

"I agree with you that the murderer entered through the window," said Colwyn. "But why did he do so? It strikes me as important to clear that up. If Ronald is the murderer, why did he take the trouble to enter the room from the outside when he slept in the next room?"

"Surely you have not forgotten that the door was locked from inside? Benson says Mr. Glenthorpe was in the habit of locking his door and sleeping with the key under the pillow. Ronald no doubt first tried to enter the room by the door, but, finding it locked, climbed out of his window, and got into the room through the other window. He dared not break open the door for fear of disturbing the inmate or alarming the house."

"Then how do you account for the key being found in the outside of Mr. Glenthorpe's door this morning?"

"Quite easily. During the struggle or in the victim's death convulsions the bed-clothes were disarranged, and Ronald saw the key beneath the pillow. Or he may have searched for it, as he knew he would need it before he could open the door and remove the body. It was easy for him to climb through the window to commit the murder, but he couldn't remove the body that way. After finding the key he unlocked the door, and put the key in the outside, intending to lock the door and remove the key as he left the room, so as to defer the discovery that Mr. Glenthorpe was missing until as long after his own departure in the morning as possible. He may have found it a difficult matter to stoop and lock the door and withdraw the key while he was enc.u.mbered with the corpse, so left it in the door till he returned from the pit. When he returned he was so exhausted with carrying the body several hundred yards, mostly uphill, that he forgot all about the key. That is my theory to account for the key being in the outside of the door."

"It's an ingenious one, at all events," commented Colwyn. "But would such a careful deliberate murderer overlook the key when he returned?"

"Nothing more likely," said the confident superintendent. "It's in trifles like this that murderers give themselves away. The notorious Deeming, who murdered several wives, and disposed of their bodies by burying them under hearthstones and covering them with cement, would probably never have been caught if he had not taken away with him a canary which belonged to the last woman he murdered. It was a clue that couldn't be missed-like the silk skein in Fair Rosamond's Bower."

"Here's another point: why did not Ronald, having disposed of the body, disappear at once, instead of waiting for the morning?"

"Because if his room had been found empty in the morning, as well as that of Mr. Glenthorpe's, the double disappearance would have aroused instant suspicion and search. Ronald gauged the moment of his departure very cleverly, in my opinion. On the one hand, he wanted to get away before the discovery of Mr. Glenthorpe's empty bedroom; and, on the other hand, he wished to stay at the inn long enough to suggest that he had no reason for flight, but was merely compelled to make an early departure. The trouble and risk he took to conceal the body outside prove conclusively that he thought the pit a sufficiently safe hiding-place to r.e.t.a.r.d discovery of the crime for a considerable time, and he probably thought that even when it was discovered that Mr. Glenthorpe was missing his absence would not, at first, arouse suspicions that he had met with foul play.

"It was not as though Mr. Glenthorpe was living at home with relatives who would have immediately raised a hue and cry. He was a lonely old man living in an inn amongst strangers, who were not likely to be interested in his goings and comings. That suggests another alternative theory to account for the key in the door: Ronald may have left it in the door to convey the impression that Mr. Glenthorpe had gone out for an early walk. That belief would at least gain Ronald a few hours to make good his escape from this part of the country and get away by train before any suspicions were aroused. The fact that none of Mr. Glenthorpe's clothes were missing was not likely to be discovered in an inn until suspicion was aroused. Ronald laid his plans well, but how was he to know that in his path to the pit he walked over soil as plastic and impressionable as wax?"

"But in spite of that you a.s.sume he knew exactly where this pit was situated?"

"Nothing more likely. It is well-known to archaeologists. Ronald may well have heard of it while staying at Durrington, or he may have known of it personally through some previous visit to this part of the world. And there is also evidence that Mr. Glenthorpe told him of the hut circles and the pit during dinner last night."

"Just one more doubt, Superintendent. How do you account for the cracked gas globe and the broken incandescent mantle?"

"Ronald probably knocked his head against it as he approached the bed," said Galloway promptly.

"Hardly. Ronald's height, according to the description, is five feet ten inches. That happens to be also my height, and I can pa.s.s under the gas globe without touching it."

"Then it was broken when Ronald was carrying the corpse downstairs," replied Galloway, after a moment's reflection. "He carried the corpse on his shoulders and part of the body would be above his head."

"Superintendent Galloway has an answer for everything," said Colwyn with a smile, to Mr. Cromering. "He is persuasive if not always convincing."

"The case seems clear enough to me," said the chief constable thoughtfully. "Come, gentlemen, let us return to the inn. We have a number of things to do, and not much time to do them in."

CHAPTER VI

The inn, seen in the grey evening of a grey day, had a stark and sinister aspect, an atmosphere of mystery and secretiveness, an air of solitary aloofness in the dreary marshes, standing half shrouded in the night mists which were sluggishly crawling across the oozing flats from the sea. It was not a place where people could be happy-this battered abode of a past age on the edge of the North Sea, with the bitter waters of the marshes lapping its foundations, and the cold winds for ever wailing round its gaunt white walls.

The portion buried in the hillside, with only the tops of the windows peering above, suggested the hidden holes and burrowing byways of a dead and gone generation of smugglers who had used the inn in the heyday of Norfolk's sea prosperity. It may have been a thought of the possibilities of the inn as a hiding place which prompted Mr. Cromering to exclaim, after gazing at it attentively for some seconds:

"We had better go through this place from the bottom."

As they approached the inn a stout short man, who was looking out from the low and narrow doorway, retreated into the interior, and immediately afterwards the long figure of the innkeeper emerged as though he had been awaiting the return of the party, and had posted somebody to watch for them.

The innkeeper showed no surprise on receiving Mr. Cromering's instruction to show them over the inn. Walking before them he led them along a side pa.s.sage opposite the bar, opening doors as he went, and drawing aside for them to enter and look at the rooms thus revealed.

It was a strange rambling old place inside, full of nooks and crannies, and unexpected odd corners and apertures, short galleries and stone pa.s.sages winding everywhere and leading nowhere; the downstairs rooms on different levels, with stone steps into them, and queer slits of windows pierced high up in the thick walls. On the ground floor a central pa.s.sage divided the inn into two portions. On the one side were several rooms, some empty and dest.i.tute of furniture, others barely furnished and empty, and a big gloomy kitchen in which a stout countrywoman, who shook and bobbed at the sight of the visitors, was washing greens at a dirty deal table. Off the kitchen were two small rooms, poorly furnished as servants' bedrooms, and the windows of these looked out on the marshes at the back of the house. On the other side of the centre pa.s.sage was the bar, which was subterranean at the far end, with the cellar adjoining tunnelled into the hillside. In the recesses of the cellar the short stout man they had seen at the doorway was, by the light of a tallow candle, affixing a spigot to one of the barrels which stood against the earthen wall. Behind the bar was a small bar parlour, and behind that two more rooms, the house on that side finishing in a low and narrow gallery running parallel with the outside wall.

The staircase upstairs opened into a stone pa.s.sage, running from the front of the inn to the back. On the left-hand side of the pa.s.sage, going from the head of the stairs to the back of the house, were four rooms. The first was a small, comfortably furnished sitting room, where Mr. Glenthorpe and his guest had dined the previous night. The bed chamber of the murdered man adjoined this room. Next came the room in which Ronald had slept, and then an empty lumber room. There were four bedrooms on the other side, all unfurnished, except one at the far end of the pa.s.sage, the lumber-room. The innkeeper explained that the murdered man had been the sole occupant of that wing of the house until the previous night, when Mr. Ronald had occupied the room next to him. At this end of the pa.s.sage another and narrower pa.s.sage ran at right angles from it along the back of the house, with several rooms opening off it on one side only. The first of these rooms was empty; the next room contained a small iron bedstead, a chair, and a table, and the innkeeper said that it was his bedroom. At the next door he paused, and turning to Mr. Cromering hesitatingly remarked:

"This is my mother's room, sir. She is an invalid."