Countdown Zero

COUNTDOWN ZERO, the 18th installment in the bestselling AGENT ZERO series by Jack Mars, features a tense race against time beneath the ocean as a rogue submarine threatens coastal security with hypersonic missiles. Agent Zero faces a high-stakes game of strategy and danger within 24 hours to prevent catastrophe, all while navigating unexpected twists and dynamic action. The series also explores an engaging father-daughter relationship that adds depth to the thrilling narrative.