Madeleine Roux Books

A woman trapped in a loveless engagement joins forces with a mysterious man bent on vengeance against her fiancé in The Proposition, a lively tale of intrigue, revenge, and romance...

Much Ado About Margaret

By Madeleine Roux

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Madeleine Roux’s next season in Regency England follows a rebellious writer and the man who risks everything to publish her. Margaret Arden yearns to live like the passionate and daring women...

Marvel: What If...Loki Was Worthy? (A Loki & Valkyrie Story)

By Madeleine Roux

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Loki and Valkyrie seek redemption in the first adventure of an epic new multiversal series that reimagines the origins of iconic Marvel heroes.So many worlds, so little time. Infinite possibilities...

Critical Role: The Mighty Nein--The Nine Eyes of Lucien

By Madeleine Roux

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Delve into the mind of Critical Role’s most charming villain in this original novel that chronicles Lucien’s early life and his fateful meeting with the Mighty Nein. Lucien has alw...

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.