Book 8.5 in the New York Times and USA TODAY bestselling Keeper of the Lost Cities series delivers what fans of the series have been begging for! Told in an exciting new way, the saga continues with plenty of huge reveals and shocking new twists — plus a complete series guide with beautiful color and black-and-white illustrations and other awesome bonuses!
In this extra special installment of the Keeper of the Lost Cities series, the story picks up right from Legacy’s particularly devastating cliffhanger. But chapters alternate between Sophie and Keefe’s perspectives to give readers deeper insights into both beloved characters. New powers will be discovered. Hard truths from the past will come to light. And all of your favorite characters will find themselves tested in ways they never imagined.
And that's not all!
Unlocked also includes a comprehensive guide to the world of the Lost Cities, featuring new character and world details that have never been revealed before — plus fun bonuses like Keeper-themed recipes, a detailed map of the Lost Cities, gorgeous full-color illustrations, and so much more!
The series
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.
Read full series description
The story centers around Sophie Foster, a talented young girl who discovers she is not only a part of a hidden, magical world but also holds a rare and dangerous ability that could change everything. Sophie’s life quickly transforms as she enters the elite world of the Lost Cities, where she learns about her heritage, faces daunting challenges, and uncovers long-held secrets. As Sophie grapples with her newfound powers, she must navigate complex relationships, from friendships to rivalries, all while uncovering a sinister conspiracy that threatens the very fabric of her world.
Rich in world-building, the series masterfully creates an immersive experience for readers, with an intricate system of magic, political intrigue, and hidden realms. The story's pacing is thrilling, filled with unexpected twists, and characters that grow alongside the plot, making it easy for readers to get lost in Sophie’s world. Themes of friendship, identity, and loyalty shine through, offering a heartwarming counterbalance to the high-stakes adventure.
Critically acclaimed for its creativity and emotional resonance, Keeper of the Lost Cities has captured the imaginations of readers and critics alike. Its ability to appeal to both younger audiences and adults makes it a standout in the world of fantasy literature. Fans have praised the series for its relatable characters, compelling storytelling, and intricate plot twists that keep them coming back for more.
Whether you're new to the world of fantasy or a long-time fan, Keeper of the Lost Cities offers a fresh and exhilarating experience, marking it as one of the must-read fantasy series of the decade. With its epic adventure, unforgettable characters, and a world that continues to grow with each new book, it’s clear why this series is a favorite among readers everywhere.
#1 · 2012Keeper of the Lost Cities 
#2 · 2014Exile 
#3 · 2015Everblaze 
#4 · 2015Neverseen 
#5 · 2016Lodestar 
#6 · 2017Nightfall 
#7 · 2018Flashback 
#8 · 2019Legacy 
#8.5 · 2020Unlocked 
#9 · 2022Stellarlune 
#9.5 · 2024Unraveled Book 9.5 
#10 · 2027Keeper of the Lost Cities 10 
#11 · TBAKeeper of the Lost Cities Book 11 Be the first reviewer
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