Stellarlune
In this stunning ninth book in the New York Times and USA TODAY bestselling Keeper of the Lost Cities series, Sophie and her friends discover the true meaning of power—and evil.
Sophie Foster changed the game.
Now she’s facing impossible choices:
When to act.
When to trust.
When to let go.
Her friends are divided and scattered, and the Black Swan wants Sophie to focus on their projects. But her instincts are leading her somewhere else.
Stellarlune—and the mysterious Elysian—might be the key to everything. But finding truth in the Lost Cities always requires sacrifice. And as the Neverseen’s plans sharpen into terrifying focus, it appears that everyone has miscalculated. The Lost Cities’ greatest lie could destroy everything. And in the battle that follows, only one thing is certain: nothing will ever be the same.
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Shannon Messenger
Shannon Messenger is a renowned author whose captivating storytelling has enchanted readers around the globe, particularly within the fantasy genre. Best known for her Keeper of the Lost Cities series, Messenger has earned a dedicated following with her unique ability to blend magical worlds with relatable, heartfelt characters. Her books resonate with fans of all ages, delivering epic adventures filled with secrets, mysteries, and moments of emotional depth.
Born and raised in Southern California, Messenger’s love for writing began early, and she nurtured her creativity through her studies and a passion for the fantasy genre. Her ability to craft rich, immersive worlds and complex characters shines through in her books, where readers are often swept away into magical realms that feel as real as the world around them.
Keeper of the Lost Cities
Also known as KOTLC.
Keeper of the Lost Cities is a captivating fantasy series that has taken readers on an unforgettable journey through a world filled with magic, intrigue, and heart-pounding adventure. Perfect for fans of epic fantasy and young adult fiction, this bestselling saga invites readers into a beautifully imagined universe where the extraordinary becomes the norm. With its compelling blend of mystery, action, and emotional depth, it’s no wonder this series has garnered a devoted following worldwide.
Keeper of the Lost Cities consists of nine primary books, and includes two additional books that complement the series but are not considered mandatory reads and series is set to expand with the upcoming release of two more books. The current recommended reading order for the series is provided below.
Related series Keeper of the Lost Cities The Graphic Novel

