Allen Passalaqua Books

Countdown presents the search for Ray Palmer

By Allen Passalaqua, Angel Unzueta, Ron Marz, Oliver Nome

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Ray Palmer, The Atom, is missing! It's up to heroes Kyle Rayner, Donna Troy and Jason Todd to join forces as the Challengers of the Beyond and scour the Multiverse for him.

Nightwing Vol. 2: Night of the Owls (The New 52)

By Kyle Higgins

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A New York Times Best Seller!Dick Grayson must face his past and a deadly adversary in the present as he learns of his connection to the mysterious Court of Owls. But even if he's able to stop...

Nightwing

By Kyle Higgins

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"After having his face sliced off one year ago, the Joker makes his horrifying return to Gotham City! But even for man who's committed a lifetime of murder, he's more dangerous than ever before. Th...

Nightwing

By Kyle Higgins

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"Kyle Higgins sends Nightwing to the Windy City to track down his parent's killer! After the Joker's attack on the Bat-family, Nightwing finds himself in a new setting with an unlikely ally, The Pr...

Nightwing

By Kyle Higgins

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"Even though Nightwing has relocated to Chicago, the ghosts of Gotham City won't let him be. An old friend, the Mad Hatter visits his new found home, forcing Nightwing into an uneasy alliance with...

Batman and Robin Eternal

By Tynion James IV, Christian Duce, Corey Breen, Collin Kelly, Sandu Florea, Scot Eaton, Jackson Lanzing, Gabe Eltaeb, Saida Temofonte, Tony S. Daniel, Allen Passalaqua, Marilyn Patrizio, Scott Snyder, John Rauch

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"The epic finale of the sequel to the New York Times best-selling series BATMAN ETERNAL is here! The Dynamic Duo thought they had defeated her for good; but now, five years later, Mother is back, a...

The Fox: Freak Magnet

By Mark Waid, Dean Haspiel Illustrated By Dean Haspiel

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It's the fantastic debut of the high-flying Fox! Emmy Award winning writer/artist Dean Haspiel (Billy Dogma, HBO's Bored To Death) and Eisner Award-winning writer Mark Waid (Daredevil, Thrillbent)...

Harbinger

By Josh Dysart

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Harbinger

By Josh Dysart

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"Peter Stanchek. Toyo Harada. The two most destructive superpowers in the world -- literally -- have come to a reckoning of will. In the fallout of their cataclysmic conflict, their former families...

El Ocultista vol. 2

By Allen Passalaqua, Mike Norton, Alberto Diaz Castillo, Tim Seeley

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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.