Hayden Trenholm Books

The best of Neo-opsis science fiction magazine

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Steel whispers

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Four dead Borg and counting. Serial killer, gang violence, or civil war? While the Special Detection Unit hunts for answers, a terrified family searchs for their disappeared daughter, and war betwe...

Stealing home

By Hayden Trenholm

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"The eagerly anticipated conclusion to The Steele Chronicles! When Frank Steele retired from the police force to work as a private detective, he left behind more foes than friends. His girlfriend N...

Blood and water

By Hayden Trenholm

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A circle of birds

By Hayden Trenholm

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Strange bedfellows

By Hayden Trenholm

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Strangers Among Us

By Susan Forest, A.M. Dellamonica, Lucas K. Law, Gemma Files, Edward Willett Undifferentiated, Sherry Peters, Kelley Armstrong, Hayden Trenholm, Amanda Sun, Suzanne Church

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Writing Better Fiction

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Second Contacts

By Michael Rimar, Hayden Trenholm

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In the Shadow of Versailles

By Hayden Trenholm

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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.