In a time when cryo-technology allows the recently deceased to maintain brain activity for years in cold storage, successful businessman Glen Runciter consults with his late wife, Ella, who has been dead for over two decades. Glen and Ella manage a company that employs a team of anti-telepaths with a unique ability to seek out and neutralize telepaths who pose a danger to society.

Many of the best telepaths work for Ray Hollis, Runciter’s main competitor. When several of Hollis’s top employees go missing all at once, Runciter fears a plot is afoot and seeks Ella’s advice.

Meanwhile, one of Runciter’s senior recruiters, the perpetually penurious Joe Chip, brings in a new prospect with a unique ability to telepathically travel into the past and alter history. Shortly after, Runciter takes on a high-profile billionaire client who fears telepaths have infiltrated his business on the moon.

Runciter rounds up his entire staff of anti-telepaths for the mission, yet shortly after they arrive on Luna, a bomb explodes, leaving Runciter mortally wounded. Suspecting Hollis, Runciter’s team manages to get him back to their ship and into cold storage. Joe Chip assumes immediate control of the firm and flies directly to a moratorium in Zurich to have Runciter placed into cryo storage so that he can be connected with Ella and made available for consultation.

However, the moratorium is unable to stimulate the necessary brain activity and Runciter is declared dead. Almost immediately, Joe Chip and his team begin experiencing time regression, slowly at first, then accelerating until they end up in 1939. All the while, cryptic messages begin to appear, presumably from Runciter himself. Is the man truly dead, or is this a mind game inflicted by Hollis’s telepaths? How does a mysterious product called Ubik play into this nightmare?

Ubik is one of the most brilliant and exciting stories I’ve ever read and now ranks among my top five favorite SF novels along with Flow My Tears, Said the Policeman, another masterpiece from the unrivaled genius of Philip K. Dick.