What is VALIS? This question is at the heart of Philip K. Dick's groundbreaking novel, the first book in his defining trilogy. When a beam of pink light begins giving a schizophrenic man named Horselover Fat (who just might also be known as Philip K. Dick) visions of an alternate Earth where the Roman Empire still reigns, he must decide whether he is crazy or whether a godlike entity is showing him the true nature of the world.

Delmak-O is a dangerous planet. Though there are only 14 citizens, no one can trust anyone else and death can strike at any moment. The planet is vast and largely unexplored, populated mostly by gelatinous cube-shaped beings that give cryptic advice in the form of anagrams. Deities can be spoken to directly via a series of prayer amplifiers and transmitters, but they may not be happy about it. And the mysterious building in the distance draws all the colonists to it, but when they get there each sees a different motto on the front.

Glen Runciter runs a lucrative business - deploying his teams of anti-psychics to corporate clients who want privacy and security from psychic spies. But when he and his top team are ambushed by a rival, he is gravely injured and placed in "half-life," a dreamlike state of suspended animation. Soon, though, the surviving members of the team begin experiencing some strange phenomena, such as Runciter's face appearing on coins and the world seeming to move backward in time.

Ragle Gumm has a unique job: every day he wins a newspaper contest. And when he isn’t consulting his charts and tables, he enjoys his life in a small town in 1959. At least, that’s what he thinks. But then strange things start happening. He finds a phone book where all the numbers have been disconnected, and a magazine article about a famous starlet he’s never heard of named Marilyn Monroe. Plus, everyday objects are beginning to disappear and are replaced by

It's America in 1962. Slavery is legal once again. The few Jews who still survive hide under assumed names. In San Francisco, the I Ching is as common as the Yellow Pages. All because some twenty years earlier the United States lost a war—and is now occupied by Nazi Germany and Japan.