Arthur Jacobs wheeled around sharply, at the exchange between uncle and nephew.

“What was Ross doing here at night?” demanded the filing chief.

“I guess he just dropped in; saw the lights burning up here and wondered what was going on,” replied Bob.

“Did he touch anything, work on anything?” There was a desperate note of anxiety in the filing chief’s voice and Bob knew that Jacobs was thinking only of the reputation of his department rather than linking Tully to the events of the night.

“No, he only offered to help me, but I told him I was getting along all right,” said Bob.

“Did he ask you about any of the papers you were filing?” pressed the federal agent.

“Well, not exactly, but he did mention something about the radio secrets. That’s been more or less common knowledge in the department that something big was breaking and we have all been curious about it.”

“Did Tully touch this file or go into it?” demanded the filing chief.

Bob hesitated. Tully had looked into the file, but he hadn’t removed anything Bob was sure.

“Well, did he touch anything?” pressed Jacobs.