Countdown Zero
- Authors: Jack Mars
- Series: Book 18 in the Agent Zero Spy Thriller series
- Genres: Thriller
- Rank:
- Rating:
- Release Date: February 6, 2026
- Print length:
About the book
COUNTDOWN ZERO is book #18 in the #1 bestselling AGENT ZERO series, from #1 bestselling and USA Today bestselling author Jack Mars (with over 10,000 five-star reviews). The series begins with AGENT ZERO (Book #1), a free download.
Deep below the sea, a renegade submarine poses a dangerous threat, ready to unleash hypersonic missiles and cause chaos along the coast unless their demands are met.
Agent Zero has just 24 hours to stop the impending disaster, diving into a treacherous game of pursuit beneath the ocean - a game where any misstep could result in disastrous outcomes.
About the author
