A sovereign slipped into his palm.

"For only half an hour, then," he said; "mind that. Come along!"

The key clanked; the door swung back. The pale prisoner lifted his serene eyes; the tall, dark figure stepped in.

"Sybilla!"

"Yes, Sir Everard."

The great door closed with a bang.

"Half an hour, mind," reiterated the jailer.

The key turned; they were alone together within those massive walls.

"I thought we parted yesterday for the last time in this lower world," said the baronet, calmly.

"Did you? You were mistaken, then. We meet again and part again forever to-night, for the last time in this lower world, or that upper one either, in which you believe, and which I know to be a very pretty little fable."