To sleep -- perchance to dream is what torments George Orr, since his dreams change rather than fulfill reality and he feels responsible for what has happened in a new world emerging from the problems of the old. He is put through hypnosuggestive and (too?) controlled suggestions with a doctor engaged in sleep and dream research but everything is reversed until finally, with the help of a young woman, he is released as normal and escapes or Miss Le Guin, Hugo and Nebula award winner, is a literate, original, and threateningly plausible writer and you'll be reading this one with lots of rapid eye movement.