Dean Koontz Books

The mask

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A childless couple are drawn to a beautiful teenager they find in the middle of traffic. She has no past, no family and no memories when they take her home. The ghastly sounds in the night and the...

Night chills

By Dean Koontz

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A small town lies in the grip of a deadly contagion that causes people to commit unspeakable violent acts. A doomsday drug unlocks control of the human mind as a test for the ultimate takeover.

Phantoms

By Dean Koontz

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After finding one hundred and fifty people grotesquely dead in the tiny mountain town of Snowfield, California, officials cannot imagine anything as gruesome as the real reason for their death.

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.