"Carson Fender returns to the Agency after receiving a note in his school lunch informing him that Agent Nineteen has three days left to live, and that there might be someone inside the Agency working against them"--

Countdown Zero 2016, HarperCollins, New York

ISBN-13: 9780062120120

Trade paperback

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Countdown Zero 2015, Walden Pond Press, New York, NY

ISBN-13: 9780062120113

Hardcover

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