"I thought as much; but you first. Hurry."

Nancy sprang to the door, trying one key after another in feverish haste. At last, to Tom's infinite relief, he saw the key turn in the lock, and the door open.

"On deck," she whispered; "at the ladder. I'm not likely to be caught." Then she waved her hand and disappeared into the passage.

Tom pulled himself up, unloosed the rope, and stole along the rail toward the ladder. For a few moments, which seemed like a thousand years, he stood in anguished suspense waiting for Nancy. Then suddenly she came out of the mist and was at his side. They stood for a moment like disembodied spirits, creatures of the night and the fog. The next instant a hand shot out and grasped the girl's shoulder.

"Peste! mam'zelle," a rough voice hissed, "ou allez-vous?"

As the man spoke Tom swung at him with the butt of his revolver, and without a murmur the figure fell to the deck.

"Quick now," Pembroke whispered, "down the ladder."

Instantly Nancy was over the rail and Tom was climbing down after her. As he knelt in the bow and fumbled with the painter, the plash of oars sounded a dozen yards away.

"Ho! Croix du Midi!" came a hail through the fog.

"Curse it!" muttered Tom; "the painter's caught." He drew out his knife, slashed the rope that bound them to the schooner, got to his place amidships, and pushed the canoe free. The lights of a small boat were just emerging from the dark a dozen feet away. But the canoe slid by unobserved, in the fog. They heard the nose of the small boat bump against the schooner; then an oath, and a man's voice calling the watch.