Twenty subtugs had been lost attempting to bring back oil from the undersea fields on the enemy's borders. A brilliant psychologist-electronics expert is planted in the crew of the subtug Ram to discover the reason. And the reason becomes terrifying reality when, miles deep in the ocean, the minds of the crew begin to crack ...

A stunning work from the acclaimed author of Dune, the series which inspired the 2021 Denis Villeneuve epic film adaptation, Dune, starring Oscar Isaac, Timothée Chalamet, Zendaya and Josh Brolin.