Careful, so as not to make a sound, the robot slid through the opening and gathered itself for a leap. At that instant, the junkman seemed to sense its presence. He whirled around just as the robot leaped.

2615 saw its fist enter the junkman's face, sinking inches deep.

Then, impossibly, it saw the human seize its metal arm and twist it as if it were putty. The human face was gone. The human head dangled at a broken angle.

Tangled thoughts within the robot brain meshed into desperate action. It was futile. Its other arm was twisted. Its legs were wrapped into grotesque spirals.

Garbled sound came from the smashed human face. The junkman went away.

2615, helpless to move, studied the body tied to the space mine. A gaping hole in the chest was still spurting blood. A shudder shook the dying man, then he was still.

Nothing moved for a long time. Then there was movement outside the hatch opening. An arm dressed in the sleeve of a space officer poked in. It was followed by a face bearing the stamp of authority. The space officer straightened up and looked down at the robot.

"So," he said. "A robot. I hadn't expected that. You almost got me. If you had hit me in the chest instead of the head it would be all over. Lucky I have plenty of bodies of every description. Human bodies. Your kind wouldn't fit me."

"You—a robot?" 2615 said.

The space officer stared at the robot, frowning. "And what if I am?" he said.