"I think I know where to find him; but I must not stay to tell you any more. Keep a stout heart for that hour or so, and all will be well."

I put all the cheering confidence I could into my tone and manner, but it was of little avail. "I wish I could go with you," she cried wistfully. "If you do not return soon I shall be fit to do something desperate. I cannot tell you how this suspense tortures me. It was all I could do to prevent myself from coming after you just now."

"You cannot do anything but wait, dearest. Wait and trust. It will all come right."

But although I had spoken so confidently to Althea, I was very far from feeling so; and as I hurried through the deserted streets I wished the Baron had been at Jerusalem and all his mad-brained schemes and cause and a.s.sociates with him before he had come to plunge us all into this unsavoury mess.

There was, of course, only one place in the whole city where I could go in search of him--the wharf of W. Mischen; and it was no more than a bare possibility that he or any one else would be there at that time of night.

Moreover, if I did succeed in finding him there it was anything but clear how I could get him away. Already he entertained the gravest suspicions of me; and the moment he spoke to any of his infernal a.s.sociates, all the fairy tales I had told him would be exposed.

He would show the bomb which I had given to him; and it needed no gift of prophecy to understand the feeling which would be aroused against me.

Every man in the crowd would be itching to slit my throat or put a bullet into me.

There was just one chance in a million in my favour--that he had set out to blow up the "warship" by himself. But even that would not help me; as I should most certainly be unable to trace his movements.

If it had not been for the sham bomb which I had given him with its compromising history connecting me closely and certainly with it, I should have given up the quest altogether and left him to find his way back to the house. But I dared not leave that broad trail without at least a desperate effort to efface it. If it were discovered and my purchase of it proved, it would taint the whole story I had to tell of my possession of the paper I had secured from von Felsen. It would all be set down to my connexion with these infernal Poles.

In a word I was just at the end of my wits; and when I turned into the lane leading down to the wharf, I did not know whether to hope that I should find it empty or not.

I went very warily as I neared the place, pausing many a time to look about me. If any one was in the building, it was almost a certainty that spies would be somewhere in hiding to give warning to those within of the approach of any unwelcome strangers.

I scanned every possible hiding spot, therefore; and satisfied myself that no one was about; and so far as I could judge, the building itself was empty. It was shut up and in total darkness.

I pressed my ear against the door, and listened intently for any sound within. It was as still as the grave. I think I was relieved to find it so.

I was turning away to think what I could do next, when I heard a faint sound of cautious footsteps in the lane above.

Whoever might be coming, I had no mind to be caught in that equivocal position, so I crept away stealthily, keeping close in the shadows, and hid myself behind a heap of rubbish which stood against the adjoining warehouse, as two men came cautiously down the narrow street.

I was soon satisfied that the newcomers were not the regular police patrol; but they might be detectives. I should be in a pretty mess if they were; and I held my breath as they came near, watching them the while with straining eyes and quickened pulse. And then I saw that they themselves were being shadowed.

CHAPTER XXIII

IN THE GRIP OF AN ENEMY

The appearance of the third man was as disconcerting as it was mystifying. That he was sleuthing the other two was clear from the stealthy manner of his approach and the care he displayed in taking advantage of every sc.r.a.p of shelter. He was an adept at the work. More than once the men looked round to make sure they were not followed; and each time, as if by instinct, the other had gone to cover.

As they reached the warehouse the couple became even more cautious, and the spy did not venture to show so much as the tip of his nose. With a last look round, they opened the door quickly and disappeared into the building.

I dared not show myself, of course, until I knew what the spy would do; and I felt extremely uncomfortable as I waited.

It was some minutes before he ventured any nearer; and then he came down the lane with cat-like stealth and absolutely noiseless tread, and at first did what I had done, listened intently for any sounds within the warehouse.

Presently he stepped back a pace and scrutinized the front, and then turned his attention to the adjoining building. While doing this, he came right up to the rubbish heap behind which I lay; and a few seconds later began to glance about him as if for a place in which to hide.

The heap appeared to suggest itself to him in the same light as it had to me; and I saw that discovery was inevitable.

I scrambled to my feet, therefore, not willing to be taken at a disadvantage; and without a sound he turned on the instant and bolted up the lane.

I was completely mystified by this sudden flight. He was a spy, of course; but whether he had been set on by the police, or was shadowing some suspected members of the band, I had no means of even guessing.

Nor had I the time. If he was from the police he would soon be back with help; while if he was one of the men, he would carry the news to his friends that some one else was dangerously interested in the proceedings.

It was clear that something was going on inside the place, and I had to find the means of ascertaining whether Althea's father was there.

My previous visit had shown me that access to "W. Mischen's" premises could be obtained without much trouble from the water front; and although I was by no means a professional housebreaker, I had no difficulty in finding a way into the unoccupied warehouse.

One of the windows was unfastened, and raising this cautiously I squeezed through. It was a large empty room, and as dark as a chimney; but I felt all round the walls until I came to a door and shutting that behind me I struck a match and found the way out on to the wharf.

Then I had a stroke of luck. Tied to the wharf on the opposite side from "W. Mischen's" was a small boat with the oars in it; and, perceiving the possible value of having a means of retreat by the river in case of trouble, I decided to borrow this and fasten it in readiness for use in emergency. I hauled it along to "W. Mischen's" landing stage and made it fast.

The night was very still. The silence on the river was unbroken except for the lapping of the water as it eddied past, and the occasional creak of the small boat as it gritted against the wharf.

On my former visit I had noted the position of the two doors opening from the building to the wharf. One was from the warehouse portion; the other from the offices; and the latter was unfastened. I would have given a good deal to have known whether this was due to the carelessness of the obliging young clerk, or whether it had been used that night by those who were in the building. If they were expecting any fresh arrivals by water the discovery of my boat might be very awkward.

Still I could not stay to count the risks, so I pushed the door open and entered. I remembered that there was a flight of stone steps leading to the upper part; but before going up, I crept into the offices and made sure that the men I sought were not there.

I found them empty, and retraced my steps and crept up the stairs, carefully feeling each step with my hands as I went. At the top the way was blocked by a door.

No light showed from the other side of it, however; and after listening intently, I turned the handle very slowly, pausing at each creak it gave, until it yielded. It was another big barn of a room with windows looking out over the river.

My eyes were now getting accustomed to the darkness, and, by the aid of the very faint light from the windows, I made out a heap of empty sacks in one corner. I was crossing towards these on tiptoe, when I heard the murmur of voices.

Glancing in what I judged to be the direction of the sound I saw a light through the crack of a door; and after a pause I stole over the sacks and concealed myself among them.

It proved a lucky step. I had just lain down under them when the door opened and a man came out.

I recognized him as the more reckless of the couple who had been at Ziegler's with the Baron on the night of the murder.

The light from the door enabled me to see more of the place. The room from which he came was at the end farthest from the stairs by which I had come up; and between that and the stairs there was another door. I judged that there were two offices each communicating with the big warehouse and probably with one another.

This discovery was to prove of much value a little later on.

"Hush!" called some one from the room at the noise he made.

"To the devil with your hushing," he muttered with an oath. "Who's to hear?" and he opened the door leading to the stairway and went down.

I had had ample proof of his recklessness before; and I knew that if there were any others like him in the company, my life would not be worth a pinch of snuff should they discover me. I lay as still as the sacks which covered me, therefore.

Those in the room were of a much more cautious nature, however, than the fellow who had just left them; and, although they spoke together, their tones were so low that I could not make out what they said. Occasionally a single word would reach me; but I listened in vain for any indication that the Baron was among them.

In my eagerness to ascertain what was being said I was about to risk crawling to the door when I heard the man returning, and soon learnt then why the door leading to the wharf had been left open.

"Not a sign of them," he said, as he entered, to the others. "I expect the plan has missed fire. If I thought he was still fooling us, I'd shoot the old fool off hand." He left the door wide open, and I could hear distinctly.