Ernest Dudley Books

Dr. Morelle at midnight

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Ian Laking is pathologically jealous of his beautiful wife, and obsessed with murder. His only hope lies in treatment by Dr. Morelle, the psychiatrist and criminologist. However Laking, suspecting...

The Dark Bureau

By Ernest Dudley

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The Crooked Inn

By Ernest Dudley

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Two London playwrights, are seeking characters for a play. But when they travel to Wales for inspiration they find more than they bargained for. They arrive in Llanberis and are forced to stay at '...

The blind beak

By Ernest Dudley

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Eighteenth-century London. Blind magistrate, Sir John Fielding, "The Blind Beak," had instigated the Bow Street Runners to combat the hordes of criminals so rife throughout the city. Criminals such...

Dr. Morelle and the Doll

By Ernest Dudley

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Dr. Morelle meets murder

By Ernest Dudley

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Here is another collection of the strange adventures of Doctor Morelle. The sardonic detective's cases include: an hotelier killed with a brass candlestick; a Baroness poisoned with cyanide; a diam...

The Return of Sherlock Holmes A Play by J. E. Harold

By Arthur Rose, Ernest Dudley, Terry Rose

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Alibi and Dr. Morelle

By Ernest Dudley

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Amazing Martin Brett

By Ernest Dudley

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Mind of Dr. Morelle

By Ernest Dudley

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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.