He followed me inside, where I took down the small hanging lamp and placed it on the table. Then very carefully I helped him strip off his coat, bringing to light a grey flannel shirt, the left sleeve of which was soaked in blood.

I took out my knife, and ripped it up from the cuff to the shoulder.

The wound was about a couple of inches above the elbow, a small clean puncture right through from side to side. It was bleeding a bit, but one could see at a glance that the bullet had just missed the bone.

"You're lucky," I said. "Another quarter of an inch, and that arm would have been precious little use to you for the next two months.

Does it hurt much?"

He shook his head. "Not the least," he replied carelessly. "I hardly knew I was. .h.i.t until you grabbed hold of me."

I tied my handkerchief round as tightly as possible just above the place, and then going to the locker hauled out our spare fancy costume which had previously done duty for Mr. Gow.

"You get these on first," I said, "and then I'll fix you up properly."

I thrust my head out through the cabin door to see how things were going, and found that we were already clear of the creek and heading back towards Queenborough. Tommy, who was sitting at the tiller puffing away peacefully at a pipe, removed the latter article from his mouth.

"Where are we going to, my pretty maid?" he inquired.

"I don't know," I said; "I'll ask the pa.s.senger as soon as I've finished doctoring him."

I returned to the cabin, where Mr. Latimer, who had stripped off his wet garments, was attempting to dry himself with a dishcloth. I managed to find him a towel, and then, as soon as he had struggled into a pair of flannel trousers and a vest, I set about the job of tying up his arm. An old shirt of Tommy's served me as a bandage, and although I don't profess to be an expert, I knew enough about first aid to make a fairly serviceable job of it. Anyhow Mr. Latimer expressed himself as being completely satisfied.

"You'd better have a drink now," I said. "That's part of the treatment."

I mixed him a stiff peg, which he consumed without protest; and then, after he had inserted himself carefully into a jersey and coat, we both went outside.

"Hullo!" exclaimed Tommy genially. "How do you feel now?"

Our visitor sat down on one of the side seats in the c.o.c.kpit, and contemplated us both with his pleasant smile.

"I feel extremely obliged to you, Morrison," he said. "You have a way of keeping your engagements that I find most satisfactory."

Tommy laughed. "I had a bit of luck," he returned. "If I hadn't picked up our pal here I doubt if I should have got down in time after all.

By the way, there's no need to introduce you. You've met each other before at the hut, haven't you?"

Latimer, who was just lighting a cigar which I had offered him, paused for a moment in the operation.

"Yes," he said quietly. "We have met each other before. But I should rather like to be introduced, all the same."

Something in his manner struck me as being a trifle odd, but if Tommy noticed it he certainly didn't betray the fact.

"Well, you shall be," he answered cheerfully. "This is Mr. James Nicholson."

Latimer finished lighting his cigar, blew out the match, and dropped it carefully over the side.

"Indeed," he said. "It only shows how extremely inaccurate one's reasoning powers can be."

There was a short but rather pregnant pause. Then Tommy leaned forward.

"What do you mean?" he asked, in that peculiarly gentle voice which he keeps for the most unhealthy occasions.

Latimer's face remained beautifully impa.s.sive. "I was under the mistaken impression," he answered slowly, "that I owed my life to Mr.

Neil Lyndon."

For perhaps three seconds none of us spoke; then I broke the silence with a short laugh.

"We are up against it, Thomas," I observed.

Tommy looked backwards and forwards from one to the other of us.

"What shall we do?" he said quietly. "Throw him in the river?"

"It would be rather extravagant," I objected, "after we've just pulled him out."

Latimer smiled. "I am not sure I don't deserve it. I have lied to you, Morrison, all through in the most disgraceful manner." Then he paused.

"Still it _would_ be extravagant," he added. "I think I can convince you of that before we get to Queenborough."

Tommy throttled down the engine to about its lowest running point.

"Look here, Latimer," he said. "We're not going to Queenborough, or anywhere else, until we've got the truth out of you. You understand that, of course. You've put yourself in our power deliberately, and you must have some reason. One doesn't cut one's throat for fun."

He spoke in his usual pleasant fashion, but there was a grim seriousness behind it which no one could pretend to misunderstand.

Latimer, at all events, made no attempt to. He merely nodded his head approvingly.

"You're quite right," he said. "I had made up my mind you should hear some of the truth tonight in any case; that was the chief reason why I asked you to come and pick me up. When I saw you had brought Mr.

Lyndon with you, I determined to tell you everything. It's the simplest and best way, after all."

He stopped for a moment, and we all three sat there in silence, while the _Betty_ slowly throbbed her way forward, splashing off the black water from either bow. Then Latimer began to speak again quite quietly.

"I _am_ in the Secret Service," he said; "but you can forget the rest of what I told you the other night, Morrison. I am after bigger game than a couple of German spies--though they come into it right enough.

I am on the track of three friends of Mr. Lyndon's, who just now are as badly wanted in Whitehall as they probably are in h.e.l.l."

I leaned back with a certain curious thrill of satisfaction.

"I thought so," I said softly.

He glanced at me with his keen blue eyes, and the light of the lamp shining on his face showed up its square dogged lines of strength and purpose. It was a fine face--the face of a man without weakness and without fear.

"It's nearly twelve months ago now," he continued, "that we first began to realize at headquarters that there was something queer going on. There's always a certain amount of spying in every country--the sort of quiet, semi-official kind that doesn't do any one a ha'porth of practical harm. Now and then, of course, somebody gets dropped on, and there's a fuss in the papers, but n.o.body really bothers much about it. This was different, however. Two or three times things happened that did matter very much indeed. They were the sort of things that showed us pretty plainly we were up against something entirely new--some kind of organized affair that had nothing on earth to do with the usual casual spying.

"Well, I made up my mind to get to the bottom of it. Cas.e.m.e.nt, who is nominally the head of our department, gave me an absolutely free hand, and I set to work in my own way quite independently of the police. It was six months before I got hold of a clue. Then some designs--some valuable battleship designs--disappeared from Devonport Dockyard. It was a queer case, but there were one or two things about it which made me pretty sure it was the work of the same gang, and that for the time, at all events, they were somewhere in the neighbourhood.

"I needn't bother you now with all the details of how I actually ran them to earth. It wasn't an easy job. They weren't the sort of people who left any spare bits of evidence lying around, and by the time I found out where they were living it was just too late." He turned to me. "Otherwise, Mr. Lyndon, I think we might possibly have had the pleasure of meeting earlier."

A sudden forgotten recollection of my first interview with McMurtrie flashed vividly into my mind.

"By Jove!" I exclaimed. "What a fool I am! I knew I'd heard your name somewhere before."

Latimer nodded. "Yes," he said. "I daresay I had begun to arouse a certain amount of interest in the household by the time you arrived."

He paused. "By the way, I am still quite in the dark as to how you actually got in with them. Had they managed to send you a message into the prison?"