Telepath Den Harper did the dirty work for the authoritarian Expansion, reading the minds of criminals, spies and undesirables, for years. Unable to take the strain, he stole a starship and headed into the void, a sector of lawless space known as Satan's Reach. For five years he worked as a trader among the stars - then discovered that the Expansion had set a bounty hunter on his trail. But what does the Expansion want with a lowly telepath...