'Divine Invasions' is the definitive biography of one of America's greatest novelists and science fiction's greatest ambassador to literary audiences. Philip K. Dick loosened the bonds of the genre, ultimately making his reputation as a literary writer who happened to write speculative fiction, and profoundly influencing such writers as Pynchon, Delillo, David Foster Wallace, and Jonathan Lethem. Divine Invasions is being reissued in the run-up to the release of 'A Scanner Darkly,' a major film starring Keanu Reeves and Wynona Ryder based on Dick's novel of the same name.