Mark Greaney Books

Tom Clancy Full Force and Effect

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President Jack Ryan faces a global threat on the verge of going nuclear in this thriller in Tom Clancy's #1 New York Times bestselling series. A North Korean ICBM crashes into the Sea of Japa...

Back blast

By Mark Greaney

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Returning to Washington to uncover the truth about why the CIA betrayed him, former elite agent-turned-Gray Man Court Gentry discovers that the case is still very much under discussion and that he...

Gunmetal gray

By Mark Greaney

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"Mark Greaney, the #1 New York Times bestselling coauthor of Tom Clancy's Jack Ryan novels, delivers another breakneck thriller following the world's deadliest assassin--the Gray Man

"The Gray Man is back in another nonstop international thriller from #1 New York Times bestselling coauthor of Tom Clancy's Jack Ryan novels Court Gentry is back in action. This time he's working o...

Mission Critical

By Mark Greaney

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Red Metal

By Mark Greaney, LtCol H. Ripley Rawlings IV USMC

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A Russian military strike against Europe could change the balance of power in the West. A stunningly realistic view of modern warfare from a battlefield commander and the New York Times bestselling...

The Gray Man

By Mark Greaney

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THE FIRST GRAY MAN NOVEL FROM #1 NEW YORK TIMES BESTSELLING AUTHOR MARK GREANEY—Now a Netflix Film Starring Ryan Gosling and Chris Evans“Hard, fast, and unflinching—exactly what a thriller should b...

Tom Clancy Support and Defend

By Scott Brick, Mark Greaney

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.