“Dad was fooled by Jackley, I guess,” Frank said slowly. “There hasn’t been anyone in this tower for years.”

The boys gazed moodily over the city, then down at the grounds of Tower Mansion. The many roofs of the house itself were far below, and directly across from them rose the heavy bulk of the new tower.

“Do you think Jackley might have meant the new tower?” Joe exclaimed suddenly.

“Dad said he specified the old one.”

“But he may have been mistaken. Even the new one looks old. Let’s ask Mr. Applegate if we may search the new tower, too.”

“It’s worth trying, anyway. But I’m afraid when we tell him about the trap door, he’ll say no.”

The brothers went down through the opening. They lifted the door into place, latched it, and then wedged Frank’s small pocket notebook into the damaged side. The door held, but Frank and Joe knew that wind or rain would easily dislodge it.

The boys hurried down the steps and through the corridor to the main part of the house.

Adelia Applegate popped her head out of a doorway. “Where’s the loot?” she asked.

“We didn’t find any,” Frank admitted.