"It was necessary, sir. I was bluffing, but I needed at least the appearance of armed might to give credence to my strategy. I readily admit having rescued our planet by means of what may unappreciatively be termed trickery. As I tricked Luverduk, here, by simply using a mined target on the detonation range, so I also attempted to trick Xenthl with five unmanned space-cruisers, loaded to the seams with atomic detonators timed to produce the effect of chain-reaction and set off by remote control. There was a miniature radar transmitter of my own design within the blast-rifle which I had Xenthl's marksman use. Quite simple, really."

"Simple is hardly the word!" Hoskins thundered. "With the Sirian G-ray staring us in the face, you try your hand at strategy! I hope there is time to hang you before Earth is blown to Kingdom Come!"

"Never fear, sir! Xenthl had merely used an innovation of the Q-type light-bender to produce a mirage at the desert location of his supposed 'abandoned laboratories.' First the buildings were 'seen,' then, at the instant his weapon was supposedly 'fired,' they were not. A mirage had been turned on and off at will. That was all! Putting it simply, sir—I theorized that the G-ray was, in the first place, no more than a colossal bluff itself!"

"Theorized, the man says!" The General's complexion blended nicely with his lavender tunic. "To him, politics is five-card stud! To him—"

The tirade was interrupted by a wide-eyed orderly who bore a signal-technician's insignia on his sleeve. "Sir! Sirian ships are leaving the Moon, driving hard past Pluto! By the minute, sir, larger and larger flights are going up-ship for Deep Space! And at full drive! Sir!"

"Of course," murmured Kram. "I gave them twenty-four hours to clear out!"

Deftly mounting a portable G-gun which he had confiscated from Xenthl's personal arsenal, Kram pointed it directly at his own ship, drifting under robot control a few miles to the Flagship's starboard.

"They cleared out," he declared quietly, "because Gaylord Kram had called their bluff, gentlemen!" and triumphantly punched a firing-button.

A soft hiss, and Kram's cruiser was blown to smithereens!