A group of best-selling authors is teaming up with Amazon in a lawsuit that aims to bring down an alleged counterfeit e-book publishing site described as “the biggest pirate book site the world has ever seen.”

John Grisham, Scott Turow, R.L. Stine, Sylvia Day, and other top American authors are named as plaintiffs in the suit, along with Amazon Publishing and Penguin Random House. The complaint was filed Tuesday in U.S. District Court in Seattle against the operators of Kiss Library and affiliated websites.

The authors include some who previously fought Amazon over digital book pricing on its e-commerce site. However, in this case, they are joining forces with the company’s book publishing arm.

The plaintiffs claim that Kiss Library and related mirror websites sold unauthorized ebooks at discounted prices as they displayed, reproduced, sold, and distributed copyrighted works without permission. The lawsuit surfaces various examples of authors who have called out the defendants:

The lawsuit also notes that the “economic harm caused by Defendants’ digital piracy has been compounded during the COVID-19 pandemic — when readers are quarantined to their homes and increasingly reliant on ebooks.”

The plaintiffs request that the court disable all Kiss Library-related websites and that the defendants return all profits made off the alleged illegal sales.

“Combatting piracy requires collaboration across the industry and Amazon Publishing is glad to join together with Penguin Random House and members of the Authors Guild in this suit against book piracy entity KISS Library,” an Amazon spokesperson said in a statement. “We are committed to holding bad actors accountable.”

Some of the same authors partnering with Amazon Publishing in the lawsuit were part of a group of more than 900 writers who publicly lambasted Amazon’s negotiating tactics during a ebook pricing and profit margin dispute with Hachette back in 2014. Amazon eventually reached an agreement with Hachette later that year.

Other authors listed on the lawsuit against Kiss Library include Lee Child, Sylvia Day, C.J. Lyons, Doug Preston, Jim Rasenberger, T.J. Stiles, Monique Truong, Nicholas Weinstock, and Stuart Woods.

“In the last decade, and especially the last couple of years, the number of piracy complaints handled by the Authors Guild has skyrocketed, which is why we no longer could sit by and allow book piracy entities like KISS Library to continue to rob authors and publishers of their ability to earn a living,” Preston, president of the Authors Guild, said in a statement. “We are filing this suit not only on behalf of ourselves but for the thousands of authors who labor years to write a book, putting their hearts and souls into every sentence, only to see their income lost to book piracy.”

“It is incredibly frustrating to spend months writing a novel only to see illegal copies of my work being sold via piracy sites like the Kiss Library,” Turow, who sits on the board of the Authors Guild, said in a statement shared with GeekWire. “I decided to join the suit to support all the published authors who do not have the resources available to file a lawsuit.”

The lawsuit the latest in a series of actions from Amazon against illegal activity. Last month it filed lawsuits in three states to stop fraudulent affiliate marketing schemes driven by email campaigns purporting to come from the Seattle e-commerce giant.

Amazon also last month formed an internal “Counterfeit Crimes Unit” to bolster its fight against knock-off products on Amazon.com, as the company seeks to show customers, legislators and legitimate retailers that it’s tough on e-commerce crime.

In addition, Amazon’s Project Zero initiative has the goal of eliminating counterfeit goods on Amazon.com. Other Amazon initiatives include Transparency, which promises to eliminate counterfeits for enrolled products. Last month, Amazon joined with Valentino to sue an alleged counterfeiter of the Italian luxury fashion brand’s Rockstud shoes.

See the full lawsuit below.

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