Mars Plus

Forty years after the mission that put cyborg Roger Torraway on the surface of Mars, human colonists have far outstripped his antique mechanical adaptations. Roger is now the old man of the hills, wandering the unexplored areas and only rarely visiting the new underground warrens. A looming political crisis brings Demeter Coghlan, daughter of a Texas political dynasty, to the Red Planet. There she joins fortunes with Torraway to save the colony and resolve the human/machine nexus that was formed in the seminal book Man Plus.