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Jack Ryan · Book 40

Defense Protocol

by Brian Andrews Ghostwriter and Jeffrey Wilson Ghostwriter
  • Published as part of Tom Clancy's Jack Ryan; this book was written by Brian Andrews.
  • Published as part of Tom Clancy's Jack Ryan; this book was written by Jeffrey Wilson.
Published
1 January 2024
Pages
512
ISBN-13
9780593717974
Type
novel
Buy on Amazon All Jack Ryan books in order
Cover of Defense Protocol

About this book

Defense Protocol (2024) continues the fortieth installment of the Jack Ryan series, written by Brian Andrews and Jeffrey Wilson as ghostwriters -- part of the multi-author imprint the franchise became after Clancy's death. It runs 512 pages.

Key facts about Defense Protocol

Defense Protocol is a novel credited to Brian Andrews and Jeffrey Wilson. Readers have had it since 1 January 2024. It runs to 512 pages.

Our list holds 2 editions of Defense Protocol. Since each edition has its own ISBN, search for 9780593717974 to find the main one.

Defense Protocol is book 40 of 44 in the Jack Ryan series. The series has 44 published books. However, the series starts with The Hunt for Red October (1984).

Rules of Engagement is the latest book in the series with a full release date, out on 19 May 2026. Meanwhile, The Coldest War comes next, with an announced date of 24 November 2026.

Additionally, Brian Andrews writes Tier One, Sons of Valor and The Shepherds as separate series. Those series sit on our thriller and military thriller shelves. Meanwhile, Insurgent is the latest published Brian Andrews book on file, from 21 July 2026.

About Brian Andrews

Brian Andrews spent his early career as a U.S. Navy officer and nuclear engineer aboard submarines before turning that technical grounding into fiction. See every Brian Andrews book in order.

Its place in Jack Ryan

Defense Protocol is book 40 in the Jack Ryan series. It follows Shadow State. It is followed by Line of Demarcation. See the full Jack Ryan reading order.

Jack Ryan starts the series as a CIA analyst who stumbles into a Soviet submarine defection and rises, book by book, to national security adviser and eventually President of the United States — one of the most sustained "ordinary competent man in extraordinary circumstances" arcs in thriller fiction. Tom Clancy built his name on techno-thriller density: real weapons systems, real geopolitics, and enough procedural detail about submarines, fighter jets and intelligence tradecraft that the books doubled as…

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