by Jack Stewart
Part of Jack Ryan Universe, book 45
First published 2026
Jack Ryan Jr travels to Guam for what should be standard insurance work with Hendley Associates. The routine assignment takes a deadly turn when he discovers a US Navy dive team searching the ocean floor for an old Soviet submarine tracking device. The Cold War relic may be obsolete, but both American and Chinese forces want it recovered. When Chinese special forces arrive with orders to secure the technology at any cost, the mission becomes a lethal race to the bottom of the Pacific. The Chinese operatives expect to overpower the American divers, but they underestimate their opposition. Jack Ryan Jr will not let them claim their prize without a fight. Beneath the waves off Guam, two nations clash over secrets from the past that could shape the future of naval warfare.
Genres: science-fiction, military-fiction, adventure, action, mystery-thriller, espionage
Vibes: fast-paced, suspenseful, thought-provoking
Tropes: enemies-to-lovers, race-against-time, secret-history
Setting: Guam, Pacific Ocean
Period: Cold War
409 pages · Kindle Edition · G.P. Putnam's Sons