New York Times Bestselling Authors

Caroline Peckham & Susanne Valenti

Welcome to the dark and twisted worlds of The Twisted Sisters. Discover addictive dark romance, paranormal academies, and fantasy adventures that will keep you reading until dawn.

Reader Favorites

Most Loved Series

The series readers become completely obsessed with—filled with epic romance, unforgettable characters, and stories that stay with you long after the last page.

Zodiac Academy series artwork

Zodiac Academy

Welcome to a school where the rich rule, the powerful cheat, and the heirs of the Zodiac are forced to survive brutal magic, twisted politics, and enemies who look way too good to trust.

Ruthless Boys of the Zodiac series artwork

Ruthless Boys of the Zodiac

Five dangerously attractive heirs. One dead body mystery. Zero emotional stability. In Zodiac City, love is lethal, loyalty is optional, and everyone is hiding something explosive.

Books of trouble

Darkmore Penitentiary series artwork

Darkmore Penitentiary

A prison where monsters aren’t behind bars — they are the bars. Inside Darkmore, survival is a game, escape is a myth, and everyone has a secret worth killing for.

Books of darkness

Reading Guide

Universe of each Series

Explore every connected world created by Caroline Peckham & Susanne Valenti.

Solaria Universe

Connected fae fantasy series best experienced together.

Zodiac Academy series artwork

1. Zodiac Academy

Twin heirs of the lost throne are thrown into a brutal fae academy where power, betrayal, and prophecy decide who rules Solaria.

Ruthless Boys of the Zodiac series artwork

2. Ruthless Boys of the Zodiac

Elise searches for answers about her brother's murder while navigating five dangerous heirs tied to crime, power, and obsession.

Darkmore Penitentiary series artwork

3. Darkmore Penitentiary

A supernatural prison where wolves, criminals, and monsters battle for freedom while hidden agendas threaten everyone inside.

Sins of the Zodiac series artwork

4. Sins of the Zodiac

A zodiac-inspired paranormal romance filled with dangerous magic, prophecy, forbidden attraction, and deadly secrets.

United States of Anarchy

Connected dark contemporary and reverse-harem romances.

Brutal Boys of Everlake Prep series artwork

1. Brutal Boys of Everlake Prep

The Harlequin Crew series artwork

2. The Harlequin Crew

Dead Men Walking series artwork

3. Dead Men Walking

Vampire Universe

Age of Vampires series artwork

Age of Vampires

Fantasy Universe

A Game of Malice and Greed artwork

A Game of Malice and Greed

Books in Crown of Hearts and Chaos

Crown of Hearts and Chaos

Books in Forbidden Fiarytales

Forbidden Fairytales

Contemporary Romance

Boys of Sinners Bay series artwork

The Boys of Sinners Bay

2 Books ★ 4.13

What Readers Think

Rave Reviews

"I devoured this series in three days. I couldn't put it down! The world-building is immaculate and the romance is chef's kiss."

Ss on Zodiac Academy

"Dark, twisted, and absolutely addictive. The character development is phenomenal. I laughed, I cried, I threw my kindle across the room."

Mia T. on Ruthless Boys

"These sisters know how to write a cliffhanger! I'm obsessed with the world of Solaria. Best books I've read this year."

Youssra on Cursed Fates

"A masterpiece of dark romance. The tension is palpable from page one. Highly recommend for anyone who loves enemies-to-lovers tropes."

Emily R. on Zodiac Academy