Mona saw the boat leave the shore that carried Kinvig and his four assistants across the strait to the castle. In a moment she lost it in the black shadow. Then she heard the grating of its keel on the shingle, and the clank of the little chain that moored it.

Now everything depended on Danny. Had the lad wit enough to comprehend all her meaning? Even if so, was it in human nature to do so much as she expected him to do from no motive, but such as sprang from hopeless love? God brighten the lad's dense intellect for this night at least! Heaven ennoble our poor, selfish, uncertain human nature for one brief hour!

Mona strained her ear for the splash of an oar. Danny ought to be stirring now. But no; Mona could hear nothing but the murmur of the waters on the pebbles and their distant boom in the bay.

Look! coming up to the west coast of the castle were the sails of a fishing-boat silhouetted against the leaden sky. It was a lugger. Mona could see both mainmast and mizzen with mainsail and yawl. It was the "Ben-my-Chree." Christian was there, and he was in deadly peril. She herself had endangered his liberty and life. The girl was almost beside herself with terror.

But look again! Though no sound of oars could reach her, she could now see the clear outline of a boat scudding through the lighter patch of water just inside the castle's shadow. It was Danny! God bless and keep him on earth and in heaven! How the lad rowed! Light as the dip of a feather, and swift as the eagle flies! Bravely, Danny, bravely!

The clock in the tower of the old church in the Market-place was striking. How the bell echoed on this lonely height!—six, seven, eight, nine! Nine o'clock? Then the merchantman ought to be near at hand. Mona strained her eyes into the darkness. She could see nothing. Perhaps the ship would not come. Perhaps Heaven itself had ordered that the man she loved should be guiltless of this crime. Merciful Heaven, let it be so! let it be so!

The fishing-boat had disappeared. Yes, her sails were gone. But out at sea, far out, half a league away—what black thing was there? Oh, it must be a cloud; that was all. No doubt a storm was brewing. What was the funny sailor's saying that Ruby laughed at when Danny repeated it? No, no! it was looming larger and larger, and it was nearer than she had thought. It was—yes, it was a sail. There could be no doubt of it now. The merchantman was outside, and she was less than half a mile away.

Bill Kisseck and the three men who were to go ashore on the west of the Castle Isle must now have landed. Christian was one of them. Within fifty yards five men lay in wait to capture them. See, the "Ben-my-Chree" was fetching away to leeward. She was doubling the island rock and coming into harbor. How awkwardly the man at the tiller was tacking. That was a ruse, lest he was watched. To Mona the suspense of the moment was terrible. The very silence was awful. She felt an impulse to scream.

What about Danny? Had he reached the Lockjaw?

He must have rowed like a man possessed, to be there already. The "Ben-my-Chree" would sweep into harbor at the next tack. Could Danny get up onto the pier in time to see the lamp on the pier go down?