Consignment by Alan E. Nourse - Revenge drives John Krenner to risk everything in a world ruled by relentless automation. But on the futuristic Rolling Roads, justice isn't the only thing waiting at the end of the line.

The three shots ripped through the close night air of the prison, sharply, unbelievably. Three guards crumpled like puppets in the dead silence that followed. The thought flashed through Krenner's mind, incredibly, that possibly no one had heard.

He hurled the rope with all his might up the towering rock wall, waited a long eternity as the slim strong line swished through the darkness, and heard the dull "clank" as the hook took hold at the top. Like a cat he started up, frantically, scrambling, and climbing, the sharp heat of the rope searing his fingers. Suddenly daylight was around him, the bright unearthly glare of arc lights, the siren cutting in with its fierce scream. The shouts of alarm were far below him as he fought up the line, knot after knot, the carefully prepared knots. Twenty seconds to climb, he thought, just twenty seconds—