In a dwindling spiral they circled the planet, and Murph's cold blue eyes studied the radarscreen. Things looked good: no sign of cities, social denizens or humanoids. He was scribbling notes on his desk when the all-wave above him started crackling. He watched the green line sweep back and forth along the dial, finally centering on the wave length which was broadcasting. As it focused, the speaker sputtered in. "... in accordance with Interstellar Code," it sounded like a recording, "... we rep