Katherine Marsh Books

Night Tourist

By Katherine Marsh

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Demons at My Doorstep

By Greg Wiatt, Katherine Marsh

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The Model Male

By Katherine Marsh

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Nowhere boy

By Katherine Marsh

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"Fourteen-year-old Ahmed, a Syrian refugee, and thirteen-year-old Max, an American boy, are bound by a secret that sets them on the adventure of a lifetime"--

The night tourist

By Katherine Marsh

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After fourteen-year-old classics prodigy Jack Perdu has a near fatal accident he meets Euri, a young ghost who introduces him to New York's Underworld, where those who died in New York reside until...

The night tourist

By Katherine Marsh

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After 14-year-old prodigy Jack has a near fatal accident, he meets Euri, a young ghost who introduces him to New York's underworld, where those who died in New York reside until they are ready to m...

The Twilight Prisoner

By Katherine Marsh

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Jepp who defied the stars

By Katherine Marsh

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"Jepp, a teenage dwarf living in 16th century Europe, leaves home to seek his destiny"--

Jepp who defied the stars

By Katherine Marsh

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Imprisoned and compelled to be a court dwarf in a royal Spanish palace after leaving his countryside home, Jepp of Astraveld endures a humiliating existence along with his friend Lia before an esca...

Jepp, who defied the stars

By Katherine Marsh

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Jepp, a teenage dwarf living in 16th century Europe, leaves home to see his destiny.

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.