Authors, For Readers, Happy Things

THRONE OF NIGHTMARES (Prince of Sin 3) full description, release date and more!

I’m so wildly excited to share the title of my next book along with the full online description with you! Prince Sloth has been one of my favorite characters, and whenever I’m asked which House of Sin I’d belong to, it’s unequivocally House Sloth. That library is the stuff dreams are made of!

Lore is one of my very favorite heroines and I am so ready for you to meet this romance/adventure loving ray of sunshine that melts our icy prince. I like to think of her as a favorite bookish friend and hope you love her as much!

This book is my love letter to readers and reading and all things story. It’s so fitting that it releases a few days before Valentine’s Day. (February 10, 2026!)

Cover reveals are in the works, signed editions are available now and are LIMITED!, and I will definitely share updates as they come in. (i.e. when/if there is a Waterstones Exclusive, etc.) If you’d like to snag the signed edition, I suggest preordering sooner rather than later. (I can’t sign tons of copies anymore, but I’m very happy to sneak some in for readers who’ve been asking!)

This book stands entirely on its own, since it takes place in a whole new realm we’ve never heard or seen before. (So no need to have read the others before diving right in!)

Without any more delays…here’s the description! (Preorder links are listed below it.)

“Beware of waking the gods, their dreams are often our nightmares…”

A book of dangerous magic draws two readers into a perilous quest to find it—and their own happy ending—in this action-packed standalone fantasy romance from New York Times bestselling sensation Kerri Maniscalco.

A prince who prefers games of the head to those of the heart.

Prince Sloth hates leaving his enchanted library, but when a forgotten deity threatens the very fabric of the Underworld, he’s thrust into a race against time. He must find the Book of Nightmares—an ancient artifact that has the power to break worlds—before it unleashes a deadly game to free its master, the Goddess of Night. When a betrayal leaves him marked, and desperate, his path collides with a young woman who possesses the legendary Phoenix Tear—a portal stone unlike any other.

A librarian who is all sweet sunshine…until she burns.

Lore Brimstone has always loved getting lost in a book—but she never meant literally. Yet, after visiting a traveling caravan, she quickly finds herself transported to a terrifying but oddly familiar world—with a calculating prince at her side. Realizing they are living out her favorite novels one by one, they face off against an increasingly dark magic as they try to survive the story.

A twisted tale that means they can’t trust themselves—or their hearts.

As Lore and Sloth navigate the pages of her beloved novels gone wrong, she must channel her inner main character to defeat the Book of Nightmares before the wall between the gods and mortals comes crashing down, dooming them all.

PREORDER LINKS

SIGNED B&N EXCLUSIVE —please note these SIGNED editions are LIMITED

(Alternate cover to match previous B&N Exclusive editions, signed (while supplies last!), bonus content (love letters written by the FMC and MMC to each other, and a cocktail & mocktail recipe.) There is also a sweepstakes for anyone who preorders via B&N.

AMAZON US

Standard black cover to match previous covers.

All USA links/formats (Hardcover, ebook, audiobook)

AMAZON UK

WATERSTONES STANDARD EDITION 

INDIGO