Karen M. McManus Books

#1 NEW YORK TIMES BESTSELLER • There's a new mystery to solve at Bayview High, and there's a whole new set of rules. The highly anticipated sequel to One of Us Is Lying! Come on, Bayview, you know...

One of Us Is Next

By Karen M. McManus

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The Cousins

By Karen M. McManus

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#1 NEW YORK TIMES BESTSELLER • From the bestselling author of One of Us Is Lying comes your next obsession. You'll never feel the same about family again.Milly, Aubrey, and Jonah Story are cousins,...

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.