The final straw, piled on the camel's back.
And only one way out.
Savagely, Burke whipped the Smith & Wesson from his belt; then, tight-lipped, flicked a quick glance along the dials.
The inverter was as ready as it ever would be.
Breathing hard, Burke slid between the wire grids; stepped up onto the cramped central platform.
From the outer room: "Come out, now, Burke! You'll have a chance to prove you're sane—just a few tests, a month or two of observation—"
Burke gripped the activating switch, the lever that would throw full power into the grids.
Again, then, he hesitated.
The campus policeman's head appeared around the corner, peering. To one side, The Professor cried out. "The inverter—! Stop him!"
It was like a wire snapping in Burke's brain. He fired a single shot, high, and simultaneously threw the activating switch in one swift, coordinated flow of motion.