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Castellum
Don't look down.
In a bleak world, a city floats high in the sky, escaping the monstrous beasts below.
Peter, Castellum's greatest thief, roams the dark streets of the slums in search for his lost family. But when his mask is stolen and identity revealed, he stumbles upon a strange mystery.
A mystery about himself.
In a bleak world, a city floats high in the sky, escaping the monstrous beasts below.
Peter, Castellum's greatest thief, roams the dark streets of the slums in search for his lost family. But when his mask is stolen and identity revealed, he stumbles upon a strange mystery.
A mystery about himself.
362 pages, Paperback
Published November 30, 2025
20 people want to read
About the author
A.C. Prins
1 book3 followersA.C. Prins (Pen name for Ashlynn C. Prins) Is a regular gal living a chaotic life.
In the last ten years she has been on the move and adventure was her middle name.
Now she frantically sits at a computer and writes down the stories in her head, desperately trying to get them out whilst trying to spell correctly. It works half the time.
She currently lives in Northern California and survives off of coffee and chocolate pretzels.
In the last ten years she has been on the move and adventure was her middle name.
Now she frantically sits at a computer and writes down the stories in her head, desperately trying to get them out whilst trying to spell correctly. It works half the time.
She currently lives in Northern California and survives off of coffee and chocolate pretzels.
Ratings & Reviews
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Displaying 1 - 4 of 4 reviews
February 25, 2026
Exciting sci-fi version of Peter Pan, great for middle graders who love a good adventure story! Great characters and interesting dystopian world. Loved the easter egg moments that point back to the original story and the beautiful cover art.
January 1, 2026
4.25⭐
Castellum, a unique spin on the classic tale Peter Pan, is a fun, fast paced, futuristic adventure. This is a book that gets better and better as the story unfolds.
Initially I was skeptical, mostly because it's primarily for a younger audience (kids 10 and up), and thus normally wouldn't have been on my radar. However, after chancing upon it on social media and loving the cover art, I was inspired to look into it further. Well, the description I found sounded pretty cool, folks! I was officially intrigued.
This is a book that surprised me. I didn't expect to like it as much as I did. The world building was interesting; from the floating city of Castellum itself to Earth's ominous surface below. It's an extremely fast paced read with alternating points of view between main character Peter and the sinister Captain James.
Did I mention there are twists? There are! (Ones I didn't see coming either, by the way.)
Castellum is one of the books I plan on reading with my son when he gets older, so a reread will be a definite for me in the future. Should the story progress further with any additional books, I'll be checking those out as well.
In a nutshell, this was a surprisingly fun, fast paced, creative read and I'm so glad I stumbled upon it!
Castellum, a unique spin on the classic tale Peter Pan, is a fun, fast paced, futuristic adventure. This is a book that gets better and better as the story unfolds.
Initially I was skeptical, mostly because it's primarily for a younger audience (kids 10 and up), and thus normally wouldn't have been on my radar. However, after chancing upon it on social media and loving the cover art, I was inspired to look into it further. Well, the description I found sounded pretty cool, folks! I was officially intrigued.
This is a book that surprised me. I didn't expect to like it as much as I did. The world building was interesting; from the floating city of Castellum itself to Earth's ominous surface below. It's an extremely fast paced read with alternating points of view between main character Peter and the sinister Captain James.
Did I mention there are twists? There are! (Ones I didn't see coming either, by the way.)
Castellum is one of the books I plan on reading with my son when he gets older, so a reread will be a definite for me in the future. Should the story progress further with any additional books, I'll be checking those out as well.
In a nutshell, this was a surprisingly fun, fast paced, creative read and I'm so glad I stumbled upon it!
December 8, 2025
I’m the author so I’m bias 😬 but I’m learning to be proud of myself.
January 27, 2026
I love this story because it's a great read! The plot moves along fast and the characters stay in your mind and make you want to keep reading. Perfect for middle school kids that want a great adventure story! Adults would love it to for a cozy read.
I LOVED the ending. There were things I didn't expect for sure!
Can't wait to read the next one! A fun book for all!
I LOVED the ending. There were things I didn't expect for sure!
Can't wait to read the next one! A fun book for all!
Displaying 1 - 4 of 4 reviews