The Lone Footprint

But Kay is far from discouraged. She has been asked to solve the mystery of the summer resort, and is determined to do it. Mysterious fires have broken out. Valuables have vanished. Weird voices groan after dark, and stealthy shapes follow unwary strollers.

For a while, Kay's only clue is a single footprint. Whose is it, and why is he plaguing the innocent residents of Owl's Hole? Kay's clever detective work, with the aid of her two friends, Betty and Wilma Worth, carries her through one dangerous adventure after another. Jealous Ethel Eaton adds to the dilemma, nearly spoiling a perfect trap. Kay's search for the phantom troublemaker takes her to an unexpected solution, one that involves a missing member of her own family!