Flow My Tears, the Policeman Said(1974)

Philip K. Dick

Jason Taverner--world-famous talk show host and man-about-town--wakes up one day to find that no one knows who he is--including the vast databases of the totalitarian government. And in a society where lack of identification is a crime, Taverner has no choice but to go on the run with a host of shady characters, including crooked cops and dealers of alien drugs. But do they know more than they are letting on? And just how can a person's identity be erased overnight?