“And you are exactly right, Betty!” unexpectedly exclaimed a voice from behind the closed door. “That’s exactly how it happened. We’re sorry—we’ll be good!”

“Dot any tandy?” came in childish accents from another of the stowaways.

The girls looked at one another in surprise. Then a light dawned on them.

“Don’t have us arrested!” pleaded another voice, with laughter in it.

“That’s Will!” cried Grace.

“And Frank Haley!” added Amy.

“And Paul!” spoke Mollie. “Little brother, are you in there?”

They listened for the answer.

“Ess, I’se here. Oo dot any tandy?”

“The boys put him up to that,” whispered Grace.