Douglas Allyn Books

Black Water

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A drowned man is a dead man...so how did this one disappear? Meet Michelle "Mitch" Mitchell— tough, young single mom and a gutsy deepwater diver. As a favor to her hometown sheriff, Mitch has agree...

The Cheerio Killings

By Douglas Allyn, Doug Allyn

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Lupe Garcia, a "cowboy" cop with a wild reputation, and Lamont Yarborough, an itinerant musician and acknowledged killer, clash as they investigate the murders of a series of seemingly unrelated women

Motown Underground

By Douglas Allyn, Doug Allyn

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Lupe Garcia doesn't really plan to kill the young thug who is terrorizing his friend Danny Kelly, even though the Detroit cop lets Kelly believe he will. Garcia, the Hispanic homicide detective rea...

Icewater Mansions

By Douglas Allyn, Doug Allyn

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Doug Allyn. Thomas Dunne Book.

Black Water: A Mitch Mitchell Mystery

By Douglas Allyn, Doug Allyn

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A Dance In Deep Water

By Douglas Allyn, Doug Allyn

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In the third in a series featuring deep-water diver Michelle "Mitch" Mitchell, Doug Allyn explores the troubled relationship between a mother and son and, in doing so, brings to light the dark secr...

Diagnosis Dead: A Mystery Writers Of America Anthology

By Max-Allan Collins, Jonathan Kellerman, Brendan DuBois, John Lutz, Faye Kellerman, Marilyn Wallace, Lia Matera, John L. Breen, Michael Z. Lewin, Douglas Allyn, Nancy Pickard, Doug Allyn

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Dream lawyer / Lia Matera -- Broken doors / Brendan DuBois -- Four views of justice / Jon L. Breen -- The Bad Boz Klub / Doug Allyn -- Image / Lohn Lutz -- Verdit / Nancy Pickard -- The back page /...

Diagnosis Dead: A Mystery Writers Of American Anthology

By Max-Allan Collins, Jonathan Kellerman, Brendan DuBois, John Lutz, Faye Kellerman, Marilyn Wallace, Lia Matera, John L. Breen, Michael Z. Lewin, Douglas Allyn, Nancy Pickard, Doug Allyn

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Welcome To Wolf Country

By Douglas Allyn, Allyn, Douglas

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Detroit private investigator Roberto "Bobby" Cruz heads to the the northwoods town of Algoma, Michigan to hunt for a missing brother and nephew of a dead loan shark.

The Hard Luck Klub: Stories

By Douglas Allyn, Doug Allyn

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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.