VALIS trilogy

The VALIS trilogy is a set of science fiction/philosophical novels by author Philip K. Dick which include VALIS (1978), The Divine Invasion (1980), and The Owl in Daylight (unfinished/unpublished). The "trilogy" may also include Radio Free Albemuth (1985) and The Transmigration of Timothy Archer (1982). Dick's first novel about the VALIS concept originally titled "VALISystem A" (written 1976), was published as Radio Free Albemuth after Dick's death in 1982. The Transmigration of Timothy Archer was posthumously substituted for the unfinished The Owl in Daylight as the third novel in the "trilogy."

Background

In February and March 1974, Dick experienced a series of visions and other inexplicable perceptual and cognitive phenomena. For the rest of his life, Dick explored the philosophical implications and hypothesized about the origins of the experience, in a journal which eventually ran to hundreds of thousands of words. This work became known as the Exegesis, selections of which were published as The Exegesis of Philip K. Dick.