“Where are we going?”

“To England, child—in the Yellow Dove,” he laughed.

Doris started away from him, her eyes suddenly brilliant with excitement, and the prisoner, who had lain without movement, showed sudden signs of activity, his eyes frowning and his head wagging in anxiety.

“He wants to speak,” said Doris.

Hammersley bent over his cousin.

“Will you promise not to shout?”

Von Winden nodded quickly. So Hammersley untied the bandages that held the handkerchief in the prisoner’s mouth and helped him to a sitting posture.

“You must not go,” he stammered quickly in German. “It is impossible. You will fail. I warn you.”

“Why do you think so?”

“The machines are guarded, and the spark-plugs of your Taube have been removed and hidden.”