Jennifer McMahon Books

Promise Not to Tell: A Novel

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Returning to her small home town in Vermont to care for her Alzheimer's patient mother, reserved forty-one-year-old nurse Kate finds herself inadvertently drawn into the murder investigation of a y...

Island of Lost Girls: A Novel

By Jennifer Mcmahon

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Don t Breathe a Word A Novel

By Jennifer McMahon

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Promise Not to Tell

By Jennifer McMahon

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The Winter People

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NATIONAL BESTSELLER • The New York Times bestselling author of The Invited will shock you with a simmering psychological thriller about ghostly secrets, dark choices, and the unbreakable bond betwe...

The night sister

By Jennifer McMahon

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Burntown

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From the New York Times bestselling author of The Winter People comes a novel of edge-of-your-seat suspense starring a group of misfits trying to outsmart a killer in small-town Vermont.On the surf...

The Invited

By Jennifer McMahon

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Night Sister

By Jennifer McMahon

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Burntown

By Jennifer McMahon

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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.