Mrs. Munsen wrinkled her forehead in doubt.

“I don’t know,” she replied, in uncertainty; “it may be all right—and it may not. But so long as this is a public park, let’s stay on the safe side, and dance when you get home.”

“Agreed!” cried Marjorie, cheerfully. “We’ll go listen to the first concert in the music pavilion, and then make an early departure.”

During all this merry, care-free time, there had been no reference to the girls’ early morning experience; indeed, it seemed almost as if the incident had been forgotten. But on their way to the pavilion, Jack and John joined Marjorie and Ethel, and instantly the subject was brought up again.

“You still don’t think it was a ghost?” asked John of Marjorie.

“No, I don’t! If it was, why did Anna and Ethel and I hear the voice—and not you boys or the policemen?”

“Of course that’s true,” admitted John. “Though they do say women and girls are more sensitive, and therefore more susceptible to spiritual influences—”

“Nonsense!” cried Marjorie. “It’s somebody—some person who wants to scare us girls! And I mean to sift the thing to the bottom!”

“But how?” asked Jack, a little alarmed at his sister’s daring.

“I’m not sure,” replied Marjorie. “But I think I have a plan—”