"Stop!" called the officer to the driver.

Harry stared down, wondering.

"You there–you Boy Scout–come down!" said the officer.

Harry obeyed, wondering still more. He saw the gleam of malignant triumph on the face of Graves. But not even the presence of the officer restrained him.

"Where are those papers you stole from me, you sneak?" he cried.

"You keep away from me!" said Graves. "You–Yankee!"

"Here, no quarreling!" said the officer. "Take him, men!"

Two of the soldiers closed in on Harry. He stared at them and then at the officer, stupefied.

"What–what's this?" he stammered.

"You're under arrest, my lad, on a charge of espionage!" said the officer. "Espionage, and conspiracy to give aid and comfort to the public enemy. Anything you say may be used against you."