Her energetic mind began to plan what she could do in the matter.

It was already after seven o'clock, quite too late to go to the schoolhouse after the missing book. If King had been at home she would have consulted him, but she had no one of whom to ask advice.

She remembered what her father had said about getting up early the next morning, and she wondered if she couldn't get up even earlier still, and go to the schoolhouse for the book before breakfast. She could get the key from the janitor, who lived not far from her own home.

It seemed a fairly feasible plan, and, though she would lose her evening's study, she determined to go to bed early, and rise at daybreak to go for the book.

"I'll write a note to mother," she thought, "telling her all about it, and I'll leave it on her dressing-table. Then, when she hears me prowling out at six o'clock to-morrow morning, she'll know what I'm up to."

The notion of an early morning adventure was rather attractive, but suddenly Marjorie thought that she might not be able to get the key from the janitor so early as that.

"Perhaps Mr. Cobb doesn't get up until seven or later, and I can't wait till then," she pondered. "I've a good notion to go for that key to-night. Then I can go to the schoolhouse as early as I choose in the morning without bothering anybody."

She rose and went to the window. It was quite dark, for, though the streets were lighted, the lights were far apart, and there was no moon.

Of course, Marjorie never went out alone in the evening, but this was such an exceptional occasion, she felt sure her parents would not blame her.

"If only King was here to go with me," she thought. But King was off on his own errand, and she knew that when he returned he would want to fix his camera, and, anyway, it would be too late then.