bun,” suggested Gerald kindly, and a sociable munching followed.

It was the aunt herself who opened to a very pale and trembling Mabel the door which is appointed for the entrances and exits of the domestic staff at Yalding Towers. She looked over Mabel’s head first, as if she expected to see someone taller. Then a very small voice said:

“Aunt!”

The aunt started back, then made a step towards Mabel.

“You naughty, naughty girl!” she cried angrily; “how could you give me such a fright? I’ve a good mind to keep you in bed for a week for this, miss. Oh, Mabel, thank Heaven you’re safe!” And with that the aunt’s arms went round Mabel and Mabel’s round the aunt in such a hug as they had never met in before.

“But you didn’t seem to care a bit this morning,” said Mabel, when she had realized that her aunt really had been anxious, really was glad to have her safe home again.

“How do you know?”

“I was there listening. Don’t be angry, auntie.”

“I feel as if I could never be angry with you again, now I’ve got you safe,” said the aunt surprisingly.

“But how was it?” Mabel asked.

“My dear,” said the aunt impressively, “I’ve been in a sort of trance. I think I must be going to be ill. I’ve always been fond of you, but I didn’t want to spoil you. But yesterday, about half-past three, I was talking about you to Mr. Lewson, at the fair, and quite suddenly I felt as if you didn’t matter at all. And I felt the same when I got your letter and when those children came. And today in the middle of tea I suddenly woke up and realized that you were gone. It was awful. I think I must be going to be ill. Oh, Mabel, why did you do it?”

“It was—a joke,” said Mabel feebly. And then the two went in and the door was shut.

“That’s most uncommon odd,” said Gerald, outside; “looks like more magic to me. I don’t feel as if we’d got to the bottom of this yet, by any manner of means. There’s more about this castle than meets the eye.”

There certainly was. For this castle happened to be—but it would not be fair to Gerald to tell you more about it than he knew on that night when he went alone and invisible through the shadowy great grounds of it to look for the open window of the panelled room. He knew that night no more than I have told you; but as he went along the dewy lawns and through the groups of shrubs and trees, where pools lay like giant looking-glasses reflecting the quiet stars, and the white limbs of statues gleamed against a background of shadow, he began to feel—well, not excited, not surprised, not anxious, but—different.

The incident of the invisible Princess had surprised, the incident of the conjuring had excited, and the sudden decision to be a detective had brought its own anxieties; but all these happenings, though wonderful and unusual, had seemed to be, after all, inside the circle of possible things—wonderful as the chemical experiments are where two liquids poured together make fire, surprising as legerdemain, dg thrilling as a juggler’s display, but nothing more. Only now a new feeling came to him as he walked through those gardens; by day those gardens were like dreams, at night they were like visions. He could not see his feet as he walked, but he saw the movement of the dewy grass-blades that his feet displaced. And he had that extraordinary feeling so difficult to describe, and yet so real and so unforgettable—the feeling that he was in another world, that had covered up and hidden the old world as a carpet covers a floor. The floor was there all right, underneath, but what he walked on was the carpet that covered it—and that carpet was drenched in magic, as the turf was drenched in dew.

The feeling was very wonderful; perhaps you will feel it some day. There are still some places in the world where it can be felt, but they grow fewer every year.

The enchantment of the garden held him.

“I’ll not go in yet,” he told himself; “it’s too early. And perhaps I shall never be here at night again. I suppose it is the night that makes everything look so different.”

Something white moved under a weeping willow; white hands parted the long, rustling leaves. A white figure came out, a creature