"We seem to have arrived just in time to prevent your arrest," he said quietly. "Perhaps you will be good enough to explain what has happened? At present we are rather in the dark."

He spoke with his usual suavity, but there was a veiled menace in his voice which it was impossible to overlook. Savaroff scowled at me more truculently than ever. It was obvious that both of them were entirely ignorant of Sonia's part in the affair, and suspected me of some extraordinary bit of clumsiness. I prepared myself for some heavy lying.

"I know precious little more about it than you do," I said coolly. "I was getting things ready for you this morning, when I happened to look out of the window, and saw three men crawling towards the hut on their hands and knees. As one of them was wearing a policeman's uniform, I thought I had better cut and run. Well, I cut and ran. I made for the creek because I thought you might be there. You weren't; but there was a dinghy on the sh.o.r.e, which I suppose belonged to a small yacht that was anch.o.r.ed out in the channel. Anyhow, I took the liberty of borrowing it. I meant to row out into the river, and try to pick you up before they could get hold of a boat and follow me. If it hadn't been for these infernal coast-guards, I'd have managed it all right. I don't think they really had anything to do with the business, but they just happened to be pa.s.sing, and of course when the police shouted to them they cut in at once." I paused. "And that's the whole story," I finished, "as far as I know anything about it."

They had all three listened to me with eager attention. Even the man with the auburn beard had kept on looking away from his steering to favour me with quick glances out of his hard blue eyes. I think I came through the combined scrutiny with some credit.

McMurtrie was the first to break the ensuing silence.

"Have you any idea how you have betrayed yourself? You can speak quite freely. Our friend Mr. von Brunig knows the position."

I thought it best to take the offensive. "I haven't betrayed myself,"

I said angrily. "Somebody must have done it for me. I've not left the hut since I came down except for an occasional breath of air."

"But earlier--when you were in London?" he persisted.

I shook my head. "I have been down here a week. You don't imagine the police would have waited as long as that."

I knew I was putting them in a difficulty, for by this time they must be all aware that Latimer was still on their track, and it was obviously conceivable that my attempted arrest might be due in some way to my connection with them; anyhow I saw that even Savaroff was beginning to regard me a shade less suspiciously.

"Have you brought any of the powder with you?" asked McMurtrie.

It struck me instantly that if I said yes, I should be putting myself absolutely in their power.

"I hadn't time to get any," I answered regretfully. "I had buried it outside the hut, and they came on me so suddenly there was no chance of digging it up. Now I have once done it, however, I can make some more very quickly."

It was the flattest lie I have ever told; but I managed to get it off with surprising ease. It is astonishing what rapid strides one can make in the art of perjury with a very little practice.

Savaroff gave a grunt of disappointment, and McMurtrie turned to von Brunig, who was frowning thoughtfully, and made some almost inaudible remark in German. The latter answered at some length, but he kept his voice so low that, with my rather sketchy knowledge of that unpleasant language, it was impossible for me to overhear what he was saying.

Besides, he evidently didn't intend me to, and I had no wish to spoil the good impression I had apparently made by any appearance of eavesdropping.

It seemed to me that my course lay pretty straight in front of me.

Latimer had all the information now he was likely to get, and I knew from Joyce's wire that he intended to act immediately. In addition to this, the running down of the cutter would be known to Scotland Yard as soon as ever the men who had been sent to arrest me could get to a telephone, and the river-police and coast-guards everywhere would be warned to keep a sharp look-out for von Brunig's launch. In an hour or two at the most something was bound to happen, and the way in which I could make myself most useful seemed to be in delaying the break-up and escape of the party as long as possible. If I had to be arrested, I was determined that the others should be roped in as well.

I had just arrived at this point in my meditations when McMurtrie and von Brunig came to an end of their muttered conversation.

The former turned back to me. "You probably understand, Mr. Lyndon, that this unfortunate affair with the police alters our plans entirely. At present I am quite unable to see how they have found you out, unless you have betrayed yourself by some piece of unintentional carelessness. Anyhow, the fact remains that they know where you are, and that very probably they will be able to trace this launch."

Savaroff nodded. "As likely as not we shall have a shot across our bows when we get to Sheerness," he growled.

McMurtrie, as usual, took no notice of his interruption. "There is only one thing to do," he said. "Mr. von Brunig, who, as I have already told you, is interested in our syndicate, has offered to put his country house in Germany at our service. We must cross over to Holland before the police have time to interfere."

"Do you mean now, at once?" I asked, with a sudden inward feeling of dismay.

McMurtrie nodded. "We have to pick up a couple of friends at Sheppey first. After that we can run straight across to The Hague."

The proposal was so obviously sensible that, without arousing his suspicion, I could see no way for the moment of raising any objection.

The great thing was to keep the "syndicate" together, and to delay our departure until Latimer had had time to scoop the lot of us. Could anything provide him with a more favourable opportunity than the collection of the whole crowd in that remote bungalow at Sheppey? It was surely there if anywhere he would strike first, and I hoped, very feelingly, that he would not be too long about it. My powers of postponing our voyage to Holland appeared to have a distinct time-limit.

"There seems nothing else to do," I said. "I am sorry to have been the cause of changing all our plans; but the whole thing is as much a mystery to me as it is to you. However the police got on to my track, it wasn't through any carelessness of mine. I am no more anxious to go back to Dartmoor now than I was six weeks ago."

This last observation at least was true; and I can only hope the recording angel jotted it down as a slight set-off against the opposite column.

Savaroff removed his bulky form from in front of the cabin door, and crossing the well, sat down beside the others. They began to talk again in German; but as before I could only catch the merest sc.r.a.ps of their conversation. Once I heard Sonia's name mentioned by McMurtrie, and I just caught Savaroff's muttered reply to the effect that she was all right where she was, and could follow us to Germany later. As far as I could judge, they none of them had the remotest suspicion that she was in any way connected with the crisis.

All this while we had been throbbing along down stream at a terrific pace, keeping well to the centre of the river, and giving such small vessels as we pa.s.sed a reasonably wide berth. If there was any trouble coming to us it seemed most likely to materialize in the neighbourhood of Southend or Sheerness, which were the two places to which the police would be almost certain to send a description of the launch as soon as they could get to a telephone. As we reached the first danger-zone, I noticed von Brunig beginning to cast rather anxious glances towards the sh.o.r.e. No one seemed to pay any attention to us, however, and without slackening speed, we swept out into the broad highway of the Thames estuary.

There were several torpedo-boats lying off Sheerness, but these also remained utterly indifferent to our presence. Apparently the police had been too occupied in rescuing their coast-guard allies from a watery grave to reach a telephone in time, and we pa.s.sed along down the coast unsuspected and unchallenged.

Whatever von Brunig's weak points might be, he could certainly steer a motor-boat to perfection. He turned into the little creek under the bungalow at a pace which I certainly wouldn't have cared to attempt even in my wildest mood, and brought up in almost the identical spot where we had anch.o.r.ed the _Betty_ on the historic night of Latimer's rescue.

We had a small collapsible Berthon boat on board, just big enough to hold four at a pinch. I watched Savaroff getting it ready, wondering grimly whether there was any chance of their leaving me on the launch with only one member of the party as a companion. It would have suited me excellently, though it might have been a little inconvenient for my prospective guardian.

McMurtrie, however, promptly shattered this agreeable possibility by inviting me to take a seat in the boat. I think he believed I had told him the truth, but he evidently had no intention of letting me out of his sight again until I had actually handed him over the secret of the powder.

We landed at the foot of a little winding path, and dragged our boat out of the water on to a narrow strip of shingle. Then we set off up the cliff at a rapid pace, with von Brunig leading the way and Savaroff bringing up the rear.

The bungalow was situated about a couple of hundred yards from the summit, almost hidden by the high privet hedge which I had noticed from the sea. This hedge ran right round the garden, the only entrance being a small white gate in front of the house. Von Brunig walked up, the path followed by the rest of us, and thrusting his key into the lock pushed open the door.

We found ourselves in a fairly big, low-ceilinged apartment, lighted by a couple of French windows opening on to the side garden. They were partly covered by two long curtains, each drawn half way across. The place was comfortably furnished, and an easel with a half-finished seascape on it bore eloquent witness to the purity of its tenants'

motives.

Von Brunig looked round with a sort of impatient surprise.

"Where are the others?" he demanded harshly. "Why have they left the place empty in this way?"

"They must have walked over to the post-office," said McMurtrie. "I know Hoffman wanted to send a telegram. They will be back in a minute, I expect."

Von Brunig frowned. "They ought not to have done so. Seeker at least should have known better. After the other night--" He paused, and crossing the room threw open a door and disappeared into an adjoining apartment.

Without waiting for an invitation, I seated myself on a low couch in the farther corner of the room. I felt quite cool, but I must admit that the situation was beginning to strike me as a little unpromising.

Unless Latimer turned up precious soon it seemed highly probable that he would be too late. Considering the importance of getting me safely to Germany, neither von Brunig nor McMurtrie was likely to stay a minute longer than was necessary. I might, of course, refuse to go with them, but in that case the odds were that I should simply be overpowered and taken on board by force. Von Brunig himself looked a pretty tough handful to tackle, while Savaroff was about as powerful as a well-grown bullock. Once I was safe in the former's "country house" they would no doubt reckon on finding some means of bringing me quickly to reason.

With a bag in one hand and a bundle of papers in the other von Brunig came back into the room.

"I shall not wait," he announced curtly. "The risks are too great.

Seeker and your friend must follow as best they can."

"They are bound to be here in a minute," objected Savaroff.

Von Brunig turned on him with an angry gleam in his blue eyes. "I shall not wait," he repeated harshly. "The future of Germany is of more importance than their convenience."

McMurtrie stepped forward, serene and imperturbable as ever.

"I think Mr. von Brunig is right, Savaroff," he said. "The police may have recognized the launch, and in that case it would be madness for us not to go while we have the chance. We can leave a note for the others."

If Savaroff had any further objections he kept them to himself. He turned away with a shrug on his broad shoulders, while McMurtrie sat down at the table and hastily wrote a few lines which he showed to von Brunig. The other nodded his head approvingly.