"D'you think that'd stop them? Us with one projector against what they've got?" "Well, it would make it interesting for a while. You don't think we have a chance of getting away from here, do you?" "I don't know," Brian said thoughtfully. "But when we were testing this model projector one of them kind of blew up in our face. I think it developed a short that converted it into the old-type regenerative circuit. We never were sure about it; there wasn't enough left to find out. Those old regeneratives are always dangerous, they were liable to heat up and explode at any time if you didn't watch them. If we'd been testing the model with a full charge of fuel, I wouldn't be here in this mess now." He slid back the inspection cover of the projector's compactly complicated ignition circuit and started poking experimentally at the system of tiny coils and delicate wires. "Damn!" He swore briefly as a white-hot spark jabbed at his fingers, but he held on and the wires fused together. "That should do it. Now we're all set. Where's a hole to get out through?" "How do you like that one?" Crystal suggested, indicating a ragged gap in the broken, ancient wall of the hall. "That's big enough to fly through and there's two guards out there in the courtyard with nice, shiny, new projectors ready to make smoke out of us. Want to go and interview them?" "No. If we make enough noise here, they'll come and see us," Brian muttered as he closed the firing switch of the projector. There was no stab of flame from the muzzle. He heaved the weapon back into the middle of the hall. "As soon as that warms up there should be considerable distraction taking place in here." "Why? What's going to happen?" Crystal asked. "C'mon. Get over by the wall and be ready to run." They started for the gap in the wall. A dull, heavy rumble got under way behind them. It built to a terrific, thundering crash as the universe split in a sheet of roaring flame. They were lifted and hurled bodily outward. They sprawled in a tangled heap on the pavement. Brian struggled to his feet in a choking swirl of dust and yanked Crystal with him. The progressive explosion of the projector's fuel battered the ancient structure, the wall bulged and cracked. The startled guards gawped stupidly at the two figures that had erupted so violently. Masonry crashed to the pavement. The guards climbed over each other in a mad scramble to escape. Crystal and Brian staggered groggily after them, heading for Jim Thornton's ship. Brian boosted Crystal in, scrambled after her and slammed the hatch shut. The drive spluttered and roared to life, the ship ripped crazily into the air. * * * * * Arnold McHague, Director in Chief of Venus Consolidated, swung his heavy body around in fearful expectancy. Just a faint snick as though a lock had sprung, but there was no door on that wall. A panel slipped noiselessly aside. "Serono--" The half-voiced question hung on a note of fear.