Stay! – what was that? Her keen set ears caught some scarcely uttered sound. Was it the creaking of a board? Well, boards will creak at night, when they have a trick of being as audible as if they were exploding guns. It came again-and again. It was unmistakably a board that creaked-downstairs. Why should a board creak like that downstairs, unless-it was being stepped upon? As Madge strained her hearing, she became convinced that there were footsteps down below-stealthy, muffled footsteps, which would have been inaudible had it not been for the tell-tale boards. Some one was creeping along the passage. Suddenly there was a noise as if a coin, or a key, or some small object, had fallen to the floor. Possibly it was something of the kind which had roused her. It was followed by silence-as if the person who had caused the noise was waiting to learn if it had been overheard. Then once more the footsteps-she heard the door of the sitting-room beneath her open, and shut, and knew that some one had entered the room.

In an instant she was out of bed. She hurried on a pair of bedroom slippers which she kept beside her on the floor, and an old dressing-gown which was handy on a chair, moving as quickly and as noiselessly as the darkness would permit. Snatching up her candlestick, with its box of matches, she passed, without a moment's hesitation, as noiselessly as possible from the room. On the landing without she stood, for a second or two, listening. There could be no doubt about it-some one was in the sitting-room. Someone who wished to make himself or herself as little conspicuous as possible; but whose presence was still sufficiently obvious to the keen-eared auditor.

Madge went to Ella's room, and, turning the handle, entered. As she did so, she could hear Ella start up in bed.

"Who's there?" she cried.

"Hush! It's I. There's some one in the sitting-room."

Lighting a match, Madge applied it to the candle. Ella was sitting up in bed, staring at her, with tumbled hair and sleepy eyes, apparently only half awake.

"Madge! – what do you mean?"

"What I say. We're about to experience another of the drawbacks of rural residence. There's some one in the sitting-room-another uninvited guest."

"Are you sure?"

"Quite. If you care to go downstairs and look, you'll be sure."

"Whatever shall we do?"

"Do! – I'll show you what we'll do. Where's that revolver of Jack Martyn's, which he lent you?"

"It's in my handkerchief drawer-but it's loaded."

"All the better. I've fired off a revolver before to-day, and I am quite willing, at a pinch, to fire off another one to-night. I'll show you what we'll do." While she spoke, Madge had been searching the drawer in question. Now she stood with the weapon in her hand. "Perhaps you'll be so good as to get out of bed, and put something on, unless you prefer to go downstairs as the Woman in White. I suppose you're not afraid?"

Ella had got so far out of bed as to sit on the side, with her feet dangling over the edge.

"Well-I don't know that I am exactly afraid, but if you ask me if being woke in the middle of the night, to be told there's burglars in the house, is the kind of thing I'm fond of, I'll admit it isn't."

Madge laughed. Ella's tone, and air of exceeding ruefulness, apparently struck her as comical.

"It occurs to me, Miss Duncan, that it won't be long before Mr. Martyn makes a convert of you. As for me, now my blood's getting up-and it is getting up-I am beginning to think that it is rather fun."

"Are you? Then I'm afraid your sense of humour must be keener than mine." She followed Madge's example-putting on a pair of slippers and a dressing-gown. "Now, what are you going to do?"

"I'm going down to ask our guest to show me his card of invitation."

"Madge! Hadn't we better open the window and scream? Or you might fire into the air-if you're sure you do know how to fire a revolver."

"I'll soon show you if I know-and I'll show our visitor too. And I don't think we'd better open the window and scream. Are you coming?"

Madge moved out of the room, Ella going after her with a rush.

"Madge! – don't leave me!"

The two girls stood listening at the top of the stairs-Madge with the candlestick in one hand, and the revolver in the other.

"It strikes me that we sha'n't be able to inquire for that card of invitation, because he doesn't mean to stay for us to ask him. His intention is not to stand upon the order of his going, but to go at once."

Apparently the proceedings in Ella's bedroom had been audible below. Evidently the person in the sitting-room had become startled. There was a stampede of heavy feet across the floor; the noise of furniture being hastily pushed aside; then they could hear the sound of the window being unlatched, and opened. It was plain that the intruder, whoever it was, was bent on showing a clean pair of heels.

It seemed as if the certitude of this fact had inspired Ella with sudden courage. Anyhow, she there and then shouted, with the full force of her lungs, as if she all at once had found her voice.

"Who's that downstairs?"

"Speak!" exclaimed Madge, with a nearly simultaneous yell, "or I fire!"

And she did fire-though no one spoke; or, for the matter of that, had a chance of speaking; for the words and the shot came both together. What she fired at was not quite plain, since, if appearances could be trusted, the bullet lodged in the ceiling; for, at the same moment, a small shower of plaster came tumbling down.

"Madge!" cried Ella. "I believe you've sent the bullet right through the roof! How you frightened me!"

"It was rather a startler," admitted Madge, in whose voice there seemed a slight tendency to tremor. "I'd no idea it would make such a noise-the other revolver I fired didn't. Ella! – what are you doing?"

The question was induced by the fact that Ella had rushed to the landing window, thrown the sash up, thrust her head out, and was shouting as loudly as she could:

"Thieves! thieves! – help!"

Madge came up and put her head out beside her.

"Can you see him? Has he gone?"

"Of course he's gone-there he is, running down the road."

"Are you sure it's a man?"

"A man! It's a villain! – Help! thieves! help!"

"Don't make that noise. What's the use? No one can hear you, and it only gives him the impression that we're afraid of him, which we're not; as, if he comes back again, we'll show him. There's more bullets in this revolver than one-I remember Jack saying so; and I'm not forced to send them all through the roof."

Ella drew her head inside. There was colour in her cheeks, and fire in her eyes. Now that the immediate danger seemed past her humour was a ferocious one.

"I wish you'd shot him."

Madge was calmer, though still sufficiently sanguinary.

"Well-I couldn't very well shoot him if I never caught a glimpse of him, could I? But we'll do better next time."

Ella clenched her fists, and her teeth too.

"Next time! – Oh, I think a burglar's the most despicable wretch on the face of the earth, and, if I had my way, I'd send every one caught in the act right straight to the gallows."

"Precisely-when caught. But you can scarcely effect a capture by standing on the top of the stairs, and inquiring of the burglar if he's there."

"I know I behaved like a coward-you needn't remind me. But that was because I was taken by surprise. If he were to come back-"

"Yes-if he were to come back?" Madge looked out of the window-casually. "I fancy there's some one coming down the road-it may be he returning."

Ella clutched at her arm.

"Madge!"

"You needn't be alarmed, my dear, I was mistaken; it's no one after all. Suppose, instead of breathing threatenings and slaughters 'after the battle is over,' we go down and see what mementoes of his presence our visitor has left behind-or, rather, what mementoes he has taken with him."

"Are you sure he was alone?"

"We shall be able to make sure by going down to see."

"Oh, Madge, do you think-"

"No, my dear, I don't, or I should be no more desirous of going down than you. I'm only willing to go and see if there is some one there because I'm sure there isn't."

There was not-luckily. There was little conspicuously heroic about the bearing of the young ladies as they descended the stairs to suggest that they would have made short work of any ruthless ruffian who might have been in hiding. About halfway down, Madge gave what was perhaps an involuntary little cough; at which Ella started as if the other had been guilty of a crime; and both paused as if fearful that something dreadful might ensue. The sitting-room door was closed. They hung about the handle as if it had been the entrance to some Bluebeard's den, and unimaginable horrors were concealed within. When Madge, giving the knob a courageous twist, flung the door wide open, Ella's face was pasty white. Both perceptibly retreated, as if expecting some monster to spring out on them. But no one sprang-apparently because there was no one there.

A current of cold air came from the room.

"The window's open."

Ella's voice was tremulous. Her tremor had the effect of making Madge sarcastic.

"That's probably because our visitor opened it. You could hardly expect him to stop to close it, could you?"

She went boldly into the room-Ella hard on her heels. She held the candle above her head-to have it almost blown out by the draught. She placed it on the table.

"If we want to have a light upon the subject, we shall have to shut that window."

She did so. Then looked about her.

"Well, he doesn't seem to have left many tokens of his presence. There's a chair knocked over, and he's pushed the cloth half off the table, but I don't see anything else."

"He seems to have taken nothing."

"Probably that was because there was nothing worth his taking. If he came here in search of plunder, he must have gone away a disgusted man."

"If he came here in search of plunder? – what else could he have come for?"

"Ah! that's the question."

"What's this?" Stooping, Ella picked up something off the floor. "Here's something he's left behind, at any rate."

She was holding a scrap of paper.

"What is it-a pièce de conviction of the first importance: the button off the coat by means of which the infallible detective hunts down the callous criminal?"

"I don't know what it is. It's a sort of hieroglyphic-if it isn't-nonsense."

Madge went and looked over her shoulder. Ella was holding half a sheet of dirty white notepaper, on which was written, with very bad ink and a very bad pen, in a very bad hand: -

"TOM OSSINGTON'S GHOST."

"Right-Straight across-three-four-up.

"Right-cat-dog-cat-dog-cat-dog-cat-dog-left eye-push."

The two girls read to the end-then over again. Then they looked at each other-Madge with smiling eyes.

"That's very instructive, isn't it?"

"Very. There seems to be a good deal of cat and dog about it."

"There does, I wonder what it means."

"If it means anything."

Madge, taking the paper from Ella's hand, went with it closer to the candle. She eyed it very shrewdly, turning it over and over, and making as if she were endeavouring to read between the lines.

"Do you know, Ella, that there is something curious about this."

"I suppose there is, since it's gibberish; and gibberish is curious."

"No, I'm not thinking of that. I'm thinking of the heading-'Tom Ossington's Ghost.' Do you know that that enterprising stranger, who came in search of music lessons he didn't want, asked me if my name was Ossington, and if no one of that name lived here."

"Are you sure Ossington was the name he mentioned? It's an unusual one."

"Certain; it was because it was an unusual one that I particularly noticed it. Then that dreadful woman was full of her ghosts, even claiming, as you heard, to be the ghost's wife. Doesn't it strike you, under the circumstances, as odd that the paper the burglar has left behind him, should be headed 'Tom Ossington's Ghost'?"

"It does seem queer-though I don't know what you are driving at."

"No; I don't know what I am driving at either. But I do know that I am driving at something. I'm beginning to think that I shall see a glimmer of light somewhere soon-though at present I haven't the faintest notion where."