The "Ariadne" sped through the darkness with no lights showing. Now and again Captain Hawkins might be seen walking to and fro on the bridge with long and resolute strides.

The pantry was only a little way off, and Tom supposed he might get there under cover. He determined to make the attempt.

The next time the Captain's steps turned to starboard, Tom leapt down on the deck and stole to the stairs; below, everything was dark and quiet. Automatically he counted the steps, of which there were eighteen, to the bottom, where the edge of a red carpet was visible. After some hesitation he stealthily walked down one step at a time, until he found himself standing on a red carpet. A corridor opened in front of him, and on either side were three closed doors; behind him, on the right of the stairs, was the saloon, and on the left a kind of store-room. He could see distinctly to the end of the corridor, thanks to a little electric lamp on the ceiling, and he noticed a door which he supposed would lead to the fore-part of the ship. With noiseless steps he made for it, but when he was about half-way along the corridor he had to put out his hands to save himself from falling. He had caught his foot in a piece of string which he could not shake off, and an electric bell close by was ringing, not loudly but continuously. A cold sweat broke out on his forehead. He made another desperate effort to free his foot, and broke the string.

The bell ceased to ring, but at the same moment three lamps in the ceiling flashed on. A door opened, and Doctor Corman stepped out, clad only in his pyjamas. He looked at Tom, and said with great deliberation:

"I see I was right; I suspected you were on board, and thought of proposing a search to-morrow. You are very welcome, Mr. Murner; there's a special cabin waiting for you."

Tom took a step forward, but a pair of strong arms gripped him from behind and held him as in an iron vice; it was Toroni. The owner of the yacht appeared at the same time, half-dressed, revolver in hand.

"What's up now?" said Dixon angrily. "Your alarm arrangement, Toroni, is the very ... Hallo!" he exclaimed as he caught sight of Tom, changing the pungent expletive he was going to use. He burst into a loud guffaw of satisfaction and surprise. "Well, who'd have thought it? You here? It's more than forty-eight hours since the 'Ariadne' weighed anchor, and you have lain low until now ... Why so bashful? I trust you will not deprive us again of your pleasant company."

"It takes two for that," was Tom's infuriated answer.

He hurled himself with great violence upon Toroni, who missed his footing, uttered a vile oath, and losing hold of Tom, allowed him to slip between Corman and Dixon, who knocked the revolver out of Dixon's hand in his mad rush for the stairs. Where he should go next he had not the least notion, but he thought his first and most important duty was to divert attention from Wallion and their place of concealment in the larboard boat. But his adversaries were too quick for him. On the lowest step he was stopped and seized by three pairs of hands. He struggled for a few minutes, but gave in when he found the muzzle of a pistol pointing at him.

"That's right, take things easy," said Dixon, in a tone bordering on friendliness. "We shall come to terms before long."