What to read after The Dragon in the Sea?

From the Hugo and Nebula award-winning author of the science fiction masterpiece Dune, Frank Herbert's The Dragon in the Sea is a riveting thriller of a submarine crew trapped in the depths of the sea, hunted by one of their own.

In the endless war between East and West, oil has become the ultimate prize. Nuclear-powered subtugs brave enemy waters to tap into hidden oil reserves beneath the East's continental shelf. But the last twenty missions have never returned. Have sleeper agents infiltrated the elite submarine service, or are the crews simply cracking under the pressure?

Psychologist John Ramsay has gone undercover aboard a Hell Diver subtug. His mission is to covertly observe the remainder of the four-man crew—and find the traitor among them. Sabotage and suspicion soon plague the mission, as Ramsay discovers that the stress of fighting a war a mile and a half under the ocean exposes every weakness in a man. Hunted relentlessly by the enemy, the four men find themselves isolated in a claustrophobic undersea prison, struggling for survival against the elements . . . and themselves.

At the Publisher's request, this title is being sold without Digital Rights Management Software (DRM) applied.