far-off shout. Instantly Tom answered it, and leading Becky by the hand, started groping down the corridor in its direction.

Presently he listened again; again the sound was heard, and apparently a little nearer.

“It’s them!” said Tom; “they’re coming! Come along, Becky — we’re all right now!”

The joy of the prisoners was almost overwhelming. Their speed was slow, however, because pitfalls were somewhat common, and had to be guarded against. They shortly came to one and had to stop. It might be three feet deep, it might be a hundred — there was no passing it at any rate. Tom got down on his breast and reached as far down as he could. No bottom. They must stay there and wait until the searchers came.