Cate Holahan Books

The Widower s Wife

By Teri Barrington, Cate Holahan

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Dark Turns

By Cate Holahan

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Set in the ruthlessly competitive world of elite boarding schools, this debut psychological thriller reads like a cross between Black Swan and Donna Tartt's The Secret History A...

The Widower's Wife

By Cate Holahan

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USA Today Bestseller ONE OF KIRKUS’ BEST BOOKS OF THE YEAR A cruise ship tragedy leaves behind a sea of secrets—and hints of foul play—in “one of those rare thrillers that...

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.