"Here, catch, old bean!" he grunted. "The key to the situation, you know, what?"

The German's brain was much too slow for his reflexes. He automatically caught the bunch of keys as they came sailing through the air, and stared down stupidly at them. Then he bellowed out an oath and flung them down onto the steel deck.

"So!" he bellowed. "You swine dogs dare me to shoot, eh?"

"Why not?" Dawson cut right back at him in a flash. "It might as well be now as later. But you're still out of luck, Herr Miller. We haven't got it! I left it aboard, and you'll have to do some diving, what I mean."

As Dawson clipped out the words, he held his breath, and kept his gaze riveted on the German's face. But it wasn't more than a split second or two before he knew beyond all doubt that the fantastic, and the utterly incredible was indeed the truth. A Nazi U-boat, cleverly camouflaged as a British submarine in distress, had shot down an R.A.F. Lockheed Hudson for just one purpose: to capture its crew alive and secure a sealed envelope that this Herr Miller knew was carried by someone aboard. Moreover, he knew that that someone was either Freddy Farmer or himself.

The conglomeration of inner emotions that swept across the Nazi's face told Dawson the truth. And if he needed any further confirmation, he received it right after he spoke again.

"That's right, Herr Miller," he said evenly. "There's our stuff on the floor. Strip us and search our clothes, if it will make you feel any better. But you won't find a certain sealed envelope. No, not unless you do some fancy diving and reach that bomber. You see, stupid, we had our orders, too. And you can guess what they were!"

Wild, angry dismay flooded the Nazi's face. Not yet accustomed to dumbfounding defeat, he was unable to maintain rigid control over his emotions. His eyes popped out, and then popped back in again. His jaw sagged, and his lips moved, though he didn't utter a sound. His hands shook, and the beet red came surging up into his flat, moon-shaped face. Dawson knew that the danger point was close, very close. The German had been flung far off balance, and in the next second or so the animal training in him would get the upper hand. Cold, common sense would go flying out the window, and all that would be left would be the savage lust to butcher and slaughter.

And so Dawson half stood up, and tore off his tunic.

"It's the truth, Herr Miller!" he shouted, and started to rip open the seams. "Take a look, stupid! You see anything hidden in the lining? Take a look and weep, you fathead. See any sealed envelope? See anything that interests you? I told you that I left it aboard. Okay! See for yourself. Here! Take a darned good look!"