Kellerman Jonathan Books

When the Bough Breaks

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Alex Delaware, a child psychologist, is drawn to a case that endangers first his career and then his life. He is asked to help get information from the little girl who was the only witness to a gru...

Blood Test

By Jonathan Kellerman

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Evidence: An Alex Delaware Novel

By Jonathan Kellerman

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Veteran homicide cop Milo Sturgis and psychologist Alex Delaware expose the shadowy side of glittering Los Angeles as they investigate the gruesome death of a young couple-murdered in flagrante--t...

Bones

By Jonathan Kellerman

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When it comes to writing deftly layered, tightly coiled novels of suspense, #1 New York Times bestselling author Jonathan Kellerman reigns supreme as “master of the psychological thriller” (People)...

True Detectives

By Jonathan Kellerman

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Moses Reed and Aaron Fox have the same mother; their respective fathers were cops, friends, and partners. And despite their shared calling, their turbulent family history has set them at odds. Mose...

Deception: An Alex Delaware Novel

By Jonathan Kellerman

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Homicide detective Milo Sturgis and psychologist Alex Delaware probe the hallowed halls of Windsor Prep Academy, one of L.A.'s most prestigious prep schools, searching for the killers of a murdered...

Obsession

By Jonathan Kellerman

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Compulsion

By Jonathan Kellerman

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A tipsy young woman seeking aid on a desolate highway disappears into the inky black night. A retired schoolteacher is stabbed to death in broad daylight. Two women are butchered after closing time...

Bones: An Alex Delaware Novel

By Jonathan Kellerman

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Time Bomb: An Alex Delaware Novel

By Jonathan Kellerman

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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.