Serial publication in Astounding magazine 1955–1956. First book edition 1956. Also titled Under Pressure and 21st Century Sub.
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
A gripping novel by the legendary author of Dune.
Franklin Patrick Herbert, Jr. (1920–1986) was a critically acclaimed and commercially successful American science fiction author. Though also a short story author, he is best known for his novels, most notably Dune and its five sequels. The Dune saga, set in the distant future and taking place over millennia, deals with themes such as human survival and evolution, ecology, and the intersection of religion, politics and power. Dune itself is the "best-selling science fiction novel of all time," and the series is widely considered to be among the classics in the genre.