Harry Dolan Books

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"A new master mystery writer emerges."--Forbes MagazineOne cryptic clue leads a desperate man into a labyrinthine puzzle of murder in the electrifying new novel from national bestselling author Har...

Very Bad Men

By Harry Dolan

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A new book in the nationally bestselling series that has wowed critics and readers alike. David Loogan returns! Loogan is living in Ann Arbor with Detective Elizabeth Waishkey and her daughter, S...

Bad Things Happen

By Harry Dolan

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A gripping novel about a man trying to escape his violent past and soon becomes a murder suspect when a publisher—and the husband of the woman he's having an affair with—turns up dead.T...

The Last Dead Girl

By Harry Dolan

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David Loogan’s dark past is revealed in this prequel to Bad Things Happen—the critically acclaimed mystery that Stephen King called a “great f***ing book.”On a rainy night i...

Very Bad Men

By Harry Dolan

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From the national bestselling author of Bad Things Happen—the debut that Stephen King called a “great f***ing book”—comes a new crime novel that will blow readers away&helli...

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.