“He admitted everything. He had once worked around here and knew the Bayport area well. He had been hanging around the city for several days before the robbery.”

“Well,” Applegate said slowly, “if he said he hid the stuff in the old tower and it’s not there, it must be in the new tower, as you say.”

“Will you let us search it?” Joe asked eagerly.

“Yes, and I’ll help. I’m just as eager to find the jewels and bonds as you are. Come on, boys!”

Hurd Applegate led the way across the mansion toward a door which opened into the new tower. Now that the man was in a good mood, Frank decided that this was an opportune time to tell him about the trap door. He did so, offering to pay for the repair.

“Oh, that’s all right,” said Mr. Applegate. “I’ll have it fixed. In fact, Robinson- Oh, I forgot. I’ll get a carpenter.”

He said no more, but quickened his steps. Frank and Joe grinned. Old Mr. Applegate had not even reprimanded them!

The mansion owner opened the door to the new tower and stepped into a corridor. Frank and Joe, tingling with excitement, followed.

CHAPTER XVI

A Surprise