“I told you so,” said Aymer; “she is not here. He evidently spoke the truth.”

“He did so—so far as he knew. But this is an immense building; and you forget—you were not brought here at first—there is a residence, as they call it, detached. Davidson’s duties never take him there, unless specially sent for.”

“Well, well; let me escape, that is all.”

“You have looked out of window; you have seen the courtyard—the wall. You know that beyond the wall is the canal: all that is plain in your mind?”

“It is. First, we must get across the courtyard, then we must climb the wall, then descend and swim the canal.”

“Ah,” said Fulk, “I cannot swim.”

“I can,” said Aymer; “I learnt in the sea.” He remembered his few bright months of wandering before he had met Violet.

“I am glad of it, though I had provided for that. The bladders that would have supported you, can carry our dry clothes to change.”

“The bladders—have you got some to float you?”

“I have; but, first of all, the courtyard and the wall. We must not descend into the courtyard, because at one end there is a window—Theodore’s window—and he is here now; at the other it opens on the grounds, and warders are sometimes about. It is the wall we must attack.”