“What bit you, Ruth Fielding? A mosquito?” demanded Jennie.

“Sh! girls,” breathed the girl of the Red Mill softly. “There’s somebody just under this window—on the ledge!”

CHAPTER II—EAVESDROPPING

Helen tiptoed to the window and peered out suddenly. She expected to catch the eavesdropper, but——

“Why, there’s nobody here, Ruth,” she complained.

“No-o?”

“Not a soul. The ledge is bare away to the end. You—you must have been mistaken, dear.”

Ruth looked out again and Jennie Stone crowded in between them, likewise eager to see.

“I know there was a girl there,” whispered Ruth. “She lay right under this window.”

“But what for? Trying to scare us?” asked Helen.