“Impossible!” exclaimed Lord Hastings. “Have you lost your senses? How could a spy have got aboard?”
“As to that I don’t know,” replied the lad, “but nevertheless there is a spy aboard. I’ll stake my life on that.”
Then he proceeded to relate what had occurred.
Lord Hastings grew very grave. He took Frank by the arm.
“Come with me,” he said quietly.
He led the way to his own cabin, where he passed the word for Jack. The latter arrived almost immediately, and the situation was explained to him.
“I believe,” said Frank, “that the man is the same I saw lurking about the ship yard before the D-16 was put into commission.
“So you saw him, too?” exclaimed Jack.
“Yes, I saw him, but I didn’t know you did,” replied Frank.
“I didn’t say anything because I thought I must be wrong,” said Jack. “It didn’t seem possible a German spy could have gained admittance there.”