"He has kept your secret," he said to Grudd. "He is very shrewd; and if we need help, he will help us."

But the noise Penn had heard behind the wall was troubling the captain. They retired to that part of the cellar. They had been there but a short time when a very distinct knock was heard on the stones. It sounded like a signal. Grudd responded, striking the wall with his heel as he leaned his back against it. Then followed a low whistle in the passage. The captain's dark features lighted up.

"We are safe!" he whispered in Penn's ear. "It is Stackridge himself!"


XXIII.

THE FLIGHT OF THE PRISONERS.

Then commenced strategy. The prisoners gathered in a group before the closed passage, and talked loud, while Grudd established a communication with Stackridge. In the course of an hour a single stone in the wall had been removed. Through the aperture thus formed a bottle was introduced. This Grudd pretended afterwards to take from his pocket; and having (apparently) drank, he offered it to his friends. All drank, or appeared to drink, in a manner that provoked Gad's thirst. He vowed that it was too bad that anything good should moisten the lips of tory prisoners while a soldier like him went thirsty.

"I never saw the time, Gad," said the captain, "when I wouldn't share a bottle with you, and I will now."

Gad held his gun with one hand and grasped the bottle with the other. Penn seized the moment when his eyes were directed upwards at the cobweb festoons that adorned the cellar, and the sound of gurgling was in his throat, to whisper in Carl's ear,—

"Appear to drink, and by and by pass the bottle up stairs."