Suddenly she heard a shout from behind, and turned to see Cara running after her. She was out of breath by the time she caught up.

“Sorry to be so late,” she apologized. “I was afraid I’d not get away at all. Mother and Dad were going to an ice cream social and didn’t see any reason why I shouldn’t go along. I’ll not dare stay out later than eleven.”

“Neither will I. Let’s hope something interesting happens before that.”

“Just what do you expect?”

“I don’t really expect anything, but I’d like very much to learn the identity of your strange ghost.”

The girls slipped into a side street leading to the rear of the mansion. They found the gate locked and since they were unable to work the trick catch, were forced to climb over again.

Under the soft, weird light of the moon, the Swenster mansion looked far different than by daylight. Even Madge was willing to admit there was something sinister about the place.

“I wonder if the spade is still here?” she thought aloud.

They found it under the lilac bush, but not in the exact place where they had left it on the previous visit.

“Someone has used it again!” Madge exclaimed. “Oh, I wish we had watched last night!”