His voice shifted abruptly from a tone of easy camaraderie to one of sharp command. It was an old ruse—but it worked! Reflexes conditioned into the soldier's body through long years of training exercised themselves. The man's heels clicked together, his frame stiffened.

On that instant, his suspicion verified, Steve Duane hurled himself forward.

"I thought so!" he roared. "A spy at our very door, eh? Grab him, Chuck!"

But the room was wide, and the Nazi spy had realized his mistake the moment he made it. He, too, swept into swift action. A tug wrenched the .44 from his holster; impetuously he ripped the mask from his face to reveal eyes gleaming with fanatic determination. Malice thickened the heretofore well-concealed guttural accent which bespoke his ancestry.

"Stop! Another step, Leutnant, and you die! We are alone here. That has been arranged. We are not so foolishly overconfident as you stupid Americans. Ja—" He laughed—"it was I, Eric von Rath, who opened the door, the better to watch your progress, hear your braggart claims. Zu, you have a new weapon to end the war, nicht wahr? But our Fuehrer is the one who will use that weapon. Now—" He swung the ugly muzzle of his automatic to bear on Chuck Lafferty—"bring me the vial! Quickly, bitte! I have no time to waste—"

Dazed by the sudden turn of events, Chuck faltered a half step forward, stopped, turned questioning eyes to Duane. Steve nodded imperceptibly. His quick mind had appraised the gravity of the situation, found but one slim chance of coming out on top.

To take the flask from Lafferty's hand the Nazi must for a split second, at least, relax his guard. It was narrow figuring, but if in that second he could move....

"Go ahead, Chuck. Give it to him," he ordered.

"B-but—" hesitated Chuck.

"Give it to him!"