Brain in a Jar by David Charles Shaw

The last thing Alder remembers is dying. Before his accident, he was living in the shadows of the secretive, self-sustaining city-states known as towers. When he wakes, he’s in one—as a brain in a jar, a test subject trapped in a dark and lonely world. The only person he can trust—maybe—is Nikaya, the scientist assigned to run tests and install his upgrades.
But the tower’s sovereign is doing something to their minds…or, perhaps, has already done it. Alder may not know everything, but he knows he needs to protect Nikaya from the force that surrounds and fills them both. Desperate for sanity and for survival, Nikaya and Alder must escape now or be trapped forever.

Category: Science Fiction – Adventure