“I never thought of that,” she admitted.

“I’ve got to think of it,” said Mary Louise. “Daddy is trusting me to look after things, and I can’t fall down on my job. Nothing like that must happen.”

“What can you possibly do about it?”

“Investigate, of course.”

“How?”

“I’ll begin by talking to Freckles tomorrow and see whether he’s found out anything from the boys. Then I’ll make it a point to meet Mr. Ditmar—and follow up every clue I can get hold of.”

“You would!” yawned Jane as she crept sleepily into her cot.

CHAPTER III
The Ditmars

“Freckles!” exclaimed Mary Louise as she entered the kitchenette of the bungalow the following morning. “Where are you going?”

The boy grinned mysteriously.