Just then Mr Jackson, prone and bound on the deck, showed signs of recovering from his swoon. His eyes opened, and he gazed vacantly around. At length he caught sight of the Prince, who approached him with the revolver well in view.
'It's you, is it?' he murmured faintly. 'What are you doing on board? Who's tied me up like this?'
'See here!' replied the Prince, 'I don't want to have any arguments, but this yacht must return to Ostend at once, where you will be given up to the authorities.'
'Really!' snarled Mr Tom Jackson. 'Shall I!' Then he called out in French to the man at the wheel, 'Hi Andre! let these two be put off in the dinghy.'
It was a peculiar situation. Certain of nothing but the possession of Nella's revolver, the Prince scarcely knew whether to carry the argument further, and with stronger measures, or to accept the situation with as much dignity as the circumstances would permit.
'Let us take the dinghy,' said Nella; 'we can row ashore in an hour.'
He felt that she was right. To leave the yacht in such a manner seemed somewhat ignominious, and it certainly involved the escape of that profound villain, Mr Thomas Jackson. But what else could be done? The Prince and Nella constituted one party on the vessel; they knew their own strength, but they did not know the strength of their opponents. They held the hostile ringleader bound and captive, but this man had proved himself capable of giving orders, and even to gag him would not help them if the captain of the yacht persisted in his obstinate course. Moreover, there was a distinct objection to promiscuous shooting; the Prince felt that; there was no knowing how promiscuous shooting might end.
'We will take the dinghy,' said the Prince quickly, to the captain.
A bell rang below, and a sailor and the Negro boy appeared on deck. The pulsations of the screw grew less rapid. The yacht stopped. The dinghy was lowered. As the Prince and Nella prepared to descend into the little cock-boat Mr Tom Jackson addressed Nella, all bound as he lay.
'Good-bye,' he said, 'I shall see you again, never fear.' .
In another moment they were in the dinghy, and the dinghy was adrift. The yacht's screw chumed the water, and the beautiful vessel slipped away from them. As it receded a figure appeared at the stem. It was Mr Thomas Jackson.
He had been released by his minions. He held a white handkerchief to his ear, and offered a calm, enigmatic smile to the two forlorn but victorious occupants of the dinghy. Jules had been defeated for once in his life; or perhaps it would be more just to say that he had been out-manoeuvred. Men like Jules are incapable of being defeated. It was characteristic of his luck that now, in the very hour when he had been caught red-handed in a serious crime against society, he should be effecting a leisurely escape - an escape which left no clue behind.
The sea was utterly calm and blue in the morning sun. The dinghy rocked itself lazily in the swell of the yacht's departure. As the mist cleared away the outline of the shore became more distinct, and it appeared as if Ostend was distant scarcely a cable's length. The white dome of the great Kursaal glittered in the pale turquoise sky, and the smoke of steamers in the harbour could be plainly distinguished. On the offing was a crowd of brown-sailed fishing luggers returning with the night's catch. The many-hued bathing-vans could be counted on the distant beach. Everything seemed perfectly normal. It was difficult for either Nella or her companion to realize that anything extraordinary had happened within the last hour. Yet there was the yacht, not a mile off, to prove to them that something very extraordinary had, in fact, happened. The yacht was no vision, nor was that sinister watching figure at its stern a vision, either.
'I suppose Jules was too surprised and too feeble to inquire how I came to be on board his yacht,' said the Prince, taking the oars.
'Oh! How did you?' asked Nella, her face lighting up. 'Really, I had almost forgotten that part of the affair.'
'I must begin at the beginning and it will take some time,' answered the Prince.
'Had we not better postpone the recital till we get ashore?'
'I will row and you shall talk,' said Nella. 'I want to know now.'
He smiled happily at her, but gently declined to yield up the oars.
'Is it not sufficient that I am here?' he said.
'It is sufficient, yes,' she replied, 'but I want to know.'
With a long, easy stroke he was pulling the dinghy shorewards. She sat in the stern-sheets.
'There is no rudder,' he remarked, 'so you must direct me. Keep the boat's head on the lighthouse. The tide seems to be running in strongly; that will help us. The people on shore will think that we have only been for a little early morning excursion.'
'Will you kindly tell me how it came about that you were able to save my life, Prince?' she said.
'Save your life, Miss Racksole? I didn't save your life; I merely knocked a man down.'
'You saved my life,' she repeated. 'That villain would have stopped at nothing. I saw it in his eye.'
'Then you were a brave woman, for you showed no fear of death.' His admiring gaze rested full on her. For a moment the oars ceased to move.
She gave a gesture of impatience.
'It happened that I saw you last night in your carriage,' he said. 'The fact is, I had not had the audacity to go to Berlin with my story. I stopped in Ostend to see whether I could do a little detective work on my own account.
It was a piece of good luck that I saw you. I followed the carriage as quickly as I could, and I just caught a glimpse of you as you entered that awful house. I knew that Jules had something to do with that house. I guessed what you were doing. I was afraid for you. Fortunately I had surveyed the house pretty thoroughly. There is an entrance to it at the back, from a narrow lane. I made my way there. I got into the yard at the back, and I stood under the window of the room where you had the interview with Miss Spencer. I heard everything that was said. It was a courageous enterprise on your part to follow Miss Spencer from the Grand Babylon to Ostend. Well, I dared not force an entrance, lest I might precipitate matters too suddenly, and involve both of us in a difficulty. I merely kept watch.