The Spawn of the Death Machine

'You are an artificially constructed human being, a mobile gathering device.'
That is what the computer's metallic voice tells Tanner when it releases him from his cell. Naked, unarmed, with no memory to guide him, he emerges into a savage world, into the ruins of Manhattan in the 23rd century where wild animals roam and men have become cannibals in a frantic struggle to survive.

Who has unleashed this chaos upon the world? Has Tanner really been dispatched to gather facts to help save the ...