Elspeth Campbell Murphy Books

Three Cousins Detective Club

By Elspeth Campbell Murphy

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The mystery of the silly goose

By Elspeth Campbell Murphy

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Ten-year-old Timothy and his cousins Sarah-Jane and Titus, who make up the Three Cousins Detective Club, investigate when all the lawn ornaments in the neighborhood disappear and then are put back...

The mystery of the copycat clown

By Elspeth Campbell Murphy

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Titus, Timothy, and Sarah-Jane help to solve the related mysteries surrounding a missing photograph and the appearance of a copycat clown at a hospital fundraiser.

The mystery of the gingerbread house

By Elspeth Campbell Murphy

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When an intruder sneaks into a Victorian house that is being renovated and begins stripping off the wallpaper in the parlour, the three cousins help the owner investigate.

The mystery of the zoo camp

By Elspeth Campbell Murphy

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A special day camp lets three cousins get a look at what happens behind the scenes at the zoo, which helps them solve a mystery involving an escaping pet snake and a missing diamond ring.

The mystery of the goldfish pond

By Elspeth Campbell Murphy

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While attending a fancy banquet, Timothy and his cousins go out into the gardens and overhear a conversation that draws them into an unexpected mystery.

The mystery of the traveling button

By Elspeth Campbell Murphy

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The mysterious appearance of a Teddy Roosevelt campaign button on Tim's baseball cap attracts the attention of an unscrupulous collector.

The mystery of the birthday party

By Elspeth Campbell Murphy

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When their neighbors appear to be throwing a birthday party for their dog, the three cousins suspect that things are not what they seem.

The mystery of the lost island

By Elspeth Campbell Murphy

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While visiting Lake Misty Pines, the three cousins hear about an archaeological treasure that may lie on the island in the middle of the lake and try to track a mysterious stranger.

The mystery of the wedding cake

By Elspeth Campbell Murphy

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While attending a fancy wedding, the three detective cousins investigate the mysterious disappearance of the wedding cake.

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.