"But Libbie is lost! Maybe she is sick," urged Betty.

"She's all right," declared Bob confidently. "You see, I couldn't go to
sleep, and after I'd been in bed about an hour I got up and sat by the
window. I was staring down into the garden, and all of a sudden I saw
something white begin to move and creep about. I watched it a few moments
and I got the idea it was a burglar or a sneak thief, it kept so close to
the house. I came down to call Mr. Littell and bumped into you."

"Do you suppose it is Libbie?" chattered Esther. "Why would she go into
the garden in the middle of the night?"

"Walking in her sleep," explained Bob. "I've heard it is dangerous to
waken a sleep-walker suddenly. Perhaps you'd better call Mrs. Littell,
Betty, and I'll sit here on the window seat and see that she doesn't walk
out into the road."

The two girls hurried off and tapped lightly on Mrs. Littell's door. That
lady hurriedly admitted them, her motherly mind instantly picturing
something wrong.

"It's Libbie," said Betty softly. "Bob saw her from his window in the
garden and he thinks she's walking in her sleep. We don't want to
frighten her. What can we do?"

"I'll be right out," said Mrs. Littell reassuringly. "Libbie's mother
used to walk in her sleep, too. I think I can get the child into bed
without waking her at all."

In a few moments she came out, a heavy corduroy robe and slippers