"It should be, but nix!" Dave snapped into his flap-mike. "They're way off our course. And we're supposed to be making a rendezvous with some bombers, you know."

"See?" Barker called out and chuckled. "Remember my saying I'd make a mess of things? Right you are, sir! Quite right. We hold her as she goes, eh, old bean?"

"Cut it out!" Dave growled, but he was smiling. "But we'll let the lugs go. It would be nice, though, if they should come after us. I don't count much on just faking engine trouble and going down as though to force land. Jerry knows darn well we make good engines. However...."

"Looks like you get your wish, Dave!" Freddy Farmer's excited voice interrupted. "Guess they've sighted us. They're wheeling around in our direction."

It was true. Dave saw it was true the instant he whipped his eyes around toward the planes again. The four Messerschmitts had changed course abruptly and were headed in their direction and gaining altitude steadily. Dave took one quick look at them and then turned front and peered ahead and down. A night ground mist was fast being "melted" away by the dawn sun, and landmarks were beginning to stand out in clear relief. His heart leaped as he sighted the Lille River, the hill range, and the spread of swamp ground, and woods, marked on the map he carried in his pocket.

Dead ahead, and perhaps two minutes by air, was the mysterious area in Zone K-24. Dead ahead was the sky "graveyard" of ten Lockheed Hudsons. Dead ahead was the testing ground of Adolf Hitler's newest weapon of unrestricted warfare. Dead ahead, life and victory? Or failure, and death?

Those and countless other thoughts whipped and raced through Dave's brain as he stared hard at the "objective" of their special patrol. At the same time he automatically slid the safety catch off the red trigger button on the control stick, and placed one finger lightly against the trigger lever for the high speed camera attached to the belly of the plane.

"Hold her steady, fellows," he spoke into his flap-mike. "Carry right on as though we didn't see them. Let them get altitude, if they want. We should worry. But the instant they start pumping lead start the fancy business. Okay?"

"Right you are!" Barker replied.

"Who fakes being hit first?" Freddy Farmer called out. "That's one thing we forgot to decide."