Gregory Lamberson Books

Carnage Road

By Gregory Lamberson

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The frenzy war

By Gregory Lamberson

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Two years have passed since NYPD Captain Tony Mace hunted down and slew Janus Farel, the rogue werewolf who terrorized New York City. Mace now pushes paper in the K-9 unit as he waits to retire, aw...

The Frenzy wolves

By Gregory Lamberson

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With the aid of his elite squad of super cops, NYPC captain Tony Mace has defeated the werewolf slayers known as the Brotherhood of Torquemada. But now a new enemy has risen to persecute the peacef...

Human monsters

By Gregory Lamberson

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"For two years, private investigator Jake Helman has battled powerful supernatural forces at great physical and emotional cost to himself. He's stopped a serial killer who collected the souls of hi...

Storm demon

By Gregory Lamberson

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Private investigator Jake Helman returns to New York City after fighting the battle of his life on Pavot Island to save his best friend, Edgar. He's anxious to start a new life with NYPD homicide d...

Kayip Ruhlar

By Gregory Lamberson

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Cheap Scares Low Budget Horror Filmmakers Share Their Secrets

By Gregory Lamberson

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Cheap scares

By Gregory Lamberson

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"This guide details the process of creating and selling a horror movie from rough outline to film distribution. Chapters cover screenwriting, collaborating, budgeting and pitching projects to decis...

Personal demons

By Gregory Lamberson

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Personal Demons

By Gregory Lamberson

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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.