"But they seem to hate Billie most of all," said Vi. "I'm sure I don't know why. It's because she's so popular, I suppose."

Then to Rose, still fussing with her hair before the mirror, came the dawn of an idea. It would be hard to do anything to hurt Billie herself, for, whatever her faults, Rose was not a sneak. But she might make use of Amanda——

It was several days later—the day that had been set for the greatest of all adventures, a midnight feast in the dormitory.

It was Billie who had arranged it all, and although the feast itself was by no means a new idea, she had thought up something to make it a little more interesting and daring.

Each girl had been instructed to learn some little piece or poem which she was to recite on the great occasion. Some of the girls protested on the ground that they were poor at memorizing, but Billie had been firm.

"No recite, no eat," she had said; and so the girls, some joyfully, some reluctantly, had set to work to learn their pieces.

And Billie, full of energy and enthusiasm, had gone to work and got up a regular program with the names of the girls and the recitations they would give. Laura and Vi had helped her make duplicates of the program so that there was one for each girl.

And the strangest thing about the whole affair was that Caroline Brant, junior student and grind, had agreed to make one of the party.

Billie's chums called her a witch, for since Caroline Brant had come to Three Towers Hall she had never been known to take a hand in one adventure, no matter how harmless it may have been. And Rose, growing more and more resentful as she saw even her most faithful followers deserting her for Billie, became more sure that she would have to make use of Amanda and "The Shadow."

Neither Billie nor any of the other girls knew Caroline Brant's real reason for accepting Billie's invitation. The fact was that Caroline had fallen in love with Billie at first sight, perhaps because she was just the opposite of Caroline herself, and had since become as fond of her as if she had been her younger sister.