Duffy Brown Books

Pearls and Poison

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It’s election time in Savannah, Georgia, and Judge Guillotine Gloria—aka Reagan Summerside’s mom—is neck and neck in the polls with Kip “Scummy” Seymour.  B...

Demise in Denim

By Duffy Brown

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It’s springtime in Savannah, Georgia, in the newest Consignment Shop Mystery from the national bestselling author of Pearls and Poison. The azaleas and magnolias are in bloom—and Walker...

Dead Man Walker

By Duffy Brown

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It’s springtime in Savannah, the azaleas and magnolias are in bloom, and Reagan Summerside’s consignment shop, the Prissy Fox, is bustling with customers out to enjoy the beautiful weat...

Lethal in Old Lace

By Duffy Brown

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Before bride-to-be Reagan Summerside can tie the knot, she must first untangle a web of mysterious retirement home murders—and prove her neighbors are innocent There are two social functions...

Geared for the Grave

By Duffy Brown

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Mackinac Island is a peaceful summer resort town where everyone coasts through the streets on bicycles. But after someone sends a prominent local on her final ride, it’s up to one resourceful...

Braking for Bodies

By Duffy Brown

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Evie Bloomfield puts the pedal to the metal—in the latest Cycle Path mystery from the national bestselling author of Geared for the Grave.   Moving from Los Angeles to small, picturesque...

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.