Now Una, nobody knew why, began to lose spirit, and to grow pale. Her fun and frolic were quite gone! Even her songs ceased. She was silent with her sister, and loved solitude better. She said she was well, and quite happy, and could in no wise be got to account for the lamentable change that had stolen over her. She had grown odd too, and obstinate in trifles; and strangely reserved and cold.

Alice was very unhappy in consequence. What was the cause of this estrangement—had she offended her, and how? But Una had never before borne resentment for an hour. What could have altered her entire nature so? Could it be the shadow and chill of coming insanity?

Once or twice, when her sister urged her with tears and entreaties to disclose the secret of her changed spirits and demeanour, she seemed to listen with a sort of silent wonder and suspicion, and then she looked for a moment full upon her, and seemed on the very point of revealing all. But the earnest dilated gaze stole downward to the floor, and subsided into an odd wily smile, and she began to whisper to herself, and the smile and the whisper were both a mystery to Alice.

She and Alice slept in the same bedroom—a chamber in a projecting tower—which on their arrival, when poor Una was so merry, they had hung round with old tapestry, and decorated fantastically according to their skill and frolic. One night, as they went to bed, Una said, as if speaking to herself——

"'Tis my last night in this room—I shall sleep no more with Alice."

"And what has poor Alice done, Una, to deserve your strange unkindness?"

Una looked on her curiously, and half frightened, and then the odd smile stole over her face like a gleam of moonlight.

"My poor Alice, what have you to do with it?" she whispered.

"And why do you talk of sleeping no more with me?" said Alice.

"Why? Alice dear—no why—no reason—only a knowledge that it must be so, or Una will die."

"Die, Una darling!—what can you mean?"

"Yes, sweet Alice, die, indeed. We must all die some time, you know, or—or undergo a change; and my time is near—very near—unless I sleep apart from you."

"Indeed, Una, sweetheart, I think you are ill, but not near death."

"Una knows what you think, wise Alice—but she's not mad—on the contrary, she's wiser than other folks."

"She's sadder and stranger too," said Alice, tenderly.

"Knowledge is sorrow," answered Una, and she looked across the room through her golden hair which she was combing—and through the window, beyond which lay the tops of the great trees, and the still foliage of the glen in the misty moonlight.

"'Tis enough, Alice dear; it must be so. The bed must move hence, or Una's bed will be low enough ere long. See, it shan't be far though, only into that small room."

She pointed to an inner room or closet opening from that in which they lay. The walls of the building were hugely thick, and there were double doors of oak between the chambers, and Alice thought, with a sigh, how completely separated they were going to be.

However she offered no opposition. The change was made, and the girls for the first time since childhood lay in separate chambers. A few nights afterwards Alice awoke late in the night from a dreadful dream, in which the sinister figure which she and her father had encountered in their ramble round the castle walls, bore a principal part.

When she awoke there were still in her ears the sounds which had mingled in her dream. They were the notes of a deep, ringing, bass voice rising from the glen beneath the castle walls—something between humming and singing—listlessly unequal and intermittent, like the melody of a man whiling away the hours over his work. While she was wondering at this unwonted minstrelsy, there came a silence, and—could she believe her ears?—it certainly was Una's clear low contralto—softly singing a bar or two from the window. Then once more silence—and then again the strange manly voice, faintly chaunting from the leafy abyss.

With a strange wild feeling of suspicion and terror, Alice glided to the window. The moon who sees so many things, and keeps all secrets, with her cold impenetrable smile, was high in the sky. But Alice saw the red flicker of a candle from Una's window, and, she thought, the shadow of her head against the deep side wall of its recess. Then this was gone, and there were no more sights or sounds that night.

As they sate at breakfast, the small birds were singing merrily from among the sun-tipped foliage.

"I love this music," said Alice, unusually pale and sad; "it comes with the pleasant light of morning. I remember, Una, when you used to sing, like those gay birds, in the fresh beams of the morning; that was in the old time, when Una kept no secret from poor Alice."

"And Una knows what her sage Alice means; but there are other birds, silent all day long, and, they say, the sweetest too, that love to sing by night alone."

So things went on—the elder girl pained and melancholy—the younger silent, changed, and unaccountable.

A little while after this, very late one night, on awaking, Alice heard a conversation being carried on in her sister's room. There seemed to be no disguise about it. She could not distinguish the words, indeed, the walls being some six feet thick, and two great oak doors intercepting. But Una's clear voice, and the deep bell-like tones of the unknown, made up the dialogue.

Alice sprung from her bed, threw her clothes about her, and tried to enter her sister's room; but the inner door was bolted. The voices ceased to speak as she knocked, and Una opened it, and stood before her in her nightdress, candle in hand.

"Una—Una, darling, as you hope for peace, tell me who is here?" cried frightened Alice, with her trembling arms about her neck.

Una drew back, with her large innocent blue eyes fixed full upon her.

"Come in, Alice," she said, coldly.

And in came Alice, with a fearful glance around. There was no hiding place there; a chair, a table, a little bedstead, and two or three pegs in the wall to hang clothes on; a narrow window, with two iron bars across; no hearth or chimney—nothing but bare walls.

Alice looked round in amazement, and her eyes glanced with painful inquiry into those of her sister. Una smiled one of her peculiar sidelong smiles, and said——

"Strange dreams! I've been dreaming—so has Alice. She hears and sees Una's dreams, and wonders—and well she may."

And she kissed her sister's cheek with a cold kiss, and lay down in her little bed, her slender hand under her head, and spoke no more.

Alice, not knowing what to think, went back to hers.

About this time Ultor De Lacy returned. He heard his elder daughter's strange narrative with marked uneasiness, and his agitation seemed to grow rather than subside. He enjoined her, however, not to mention it to the old servant, nor in presence of anybody she might chance to see, but only to him and to the priest, if he could be persuaded to resume his duty and return. The trial, however, such as it was, could not endure very long; matters had turned out favourably. The union of his younger daughter might be accomplished within a few months, and in eight or nine weeks they should be on their way to Paris.

A night or two after her father's arrival, Alice, in the dead of the night, heard the well-known strange deep voice speaking softly, as it seemed, close to her own window on the outside; and Una's voice, clear and tender, spoke in answer. She hurried to her own casement, and pushed it open, kneeling in the deep embrasure, and looking with a stealthy and affrighted gaze towards her sister's window. As she crossed the floor the voices subsided, and she saw a light withdrawn from within. The moonbeams slanted bright and clear on the whole side of the castle overlooking the glen, and she plainly beheld the shadow of a man projected on the wall as on a screen.

This black shadow recalled with a horrid thrill the outline and fashion of the figure in the Spanish dress. There were the cap and mantle, the rapier, the long thin limbs and sinister angularity. It was so thrown obliquely that the hands reached to the window-sill, and the feet stretched and stretched, longer and longer as she looked, toward the ground, and disappeared in the general darkness; and the rest, with a sudden flicker, shot downwards, as shadows will on the sudden movement of a light, and was lost in one gigantic leap down the castle wall.

"I do not know whether I dream or wake when I hear and see these sights; but I will ask my father to sit up with me, and we two surely cannot be mistaken. May the holy saints keep and guard us!" And in her terror she buried her head under the bed-clothes, and whispered her prayers for an hour.