Samuel R. Delany 
Einstein Intersection 

In an incredible far future, the known laws of Time and Space no longer apply to the world — and the seed of Man has mutated. Lobey is a mutant, different because he can hear the music in people’s minds. And when he encounters the beautiful dead-mute, Friza, he knows he has found a kindred soul. Then Friza is killed, by someone or something unknown, and Lobey, driven by a knowledge he does not understand, sets out to bring her back from the dead. His journey leads him to strange lands and stranger people: people such as Spider, the eternal traitor incarnate; the Dove, embodiment of beauty; and Green-Eye, doomed to be the victim of a ritual as old as Time. And always in the background, always waiting, stands the shadow of the chilling, childlike killer from the sea. The being called Kid Death . . .Winner of the Nebula Award for best novel, 1968