Jonathan Kellerman Books

NEW YORK TIMES BESTSELLER • A former star athlete turned deputy coroner is drawn into a brutal, complicated murder in this psychological thriller from a father-son writing team that delivers “brill...

A Measure of Darkness

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Deputy coroner Clay Edison goes to extreme lengths for a forgotten Jane Doe in the new thriller from a father-son team of bestselling authors who write “brilliant, page-turning fiction” (Stephen Ki...

The Golem of Hollywood

By Jonathan Kellerman, Jesse Kellerman

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The #1 New York Times bestselling author of the acclaimed Alex Delaware novels and the award-winning #1 international bestselling author of The Genius combine their extraordinary talents for one of...

Double Homicide

By Jonathan Kellerman, Faye Kellerman

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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.