Blog Tour: The Mostly Invisible Boy by AJ Vanderhorst (#TheWriteReads)

Hi Blisses,

TITLE: The Mostly Invisible Boy
BY: AJ Vanderhorst
SERIES: Casey Grimes #1
GENRES: Childrens, Middle Grade, Fantasy
PUBLISHING: May 6th 2021 by Lion & Co (first published April 25th 2020)
TRIGGERS: Gore, blood, violence
NOTES: I received an e-copy from the publisher and blog tour host in exchange for promotion and honest review. This did not affect my review in any way.

I promise, this would be the last delayed blog tour post from me this year. Again, big thanks to Dave (@The_WriteReads) for including me in this #BlogTour. I don’t always read a childrens and middle grade but when I do, I always enjoy what I read. It’s no different with The Mostly Invisible Boy.


Eleven-year-old Casey is stubbornly friendly, but he’s eternally the new kid at Vintage Woods Middle School. Students look right through him—and they’re not faking. Casey doesn’t know why he’s mostly-invisible, but when he scales a colossal oak, he discovers a fortress in its branches. The forgotten sentry tree marks the border between his safe, suburban life and a fierce frontier.

Casey and his little sister Gloria infiltrate Sylvan Woods, a secret forest society devoted to ancient, wild things. Sky-high footpaths. Survival sewing. Monster control. Shockingly, people here actually see Casey—but being seen isn’t enough. He wants to belong.

Keeping his identity hidden–while struggling to prove he fits–is hard enough, but Butcher Beasts have returned to Sylvan Woods after a hundred years. Trickery is under siege. As the monsters close in, and the fearsome Sylvan Watch hunts Casey down, he and his newfound friends must unearth abandoned magic, buried at the forest’s roots…or be devoured along with everyone else, Sylvans and civilians alike.

A fast-paced middle grade fantasy/adventure book with all the monsters kids could ever hope for.


Goodreads | Amazon UK | Amazon US


When I read reviews comparing (in a good way) this book to the Percy Jackson series, I thought it must be really good. Even though I haven’t read the PJO series yet, I am aware of how good it is. So I was really excited to read this one. I know, I know, you must be thinking that if I was excited, then why is my review late? In my defense, I read the book a day after receiving a copy, I just didn’t write a review right away. LOL.

Anyway, The Mostly Invisible Boy is everything I expected it to be – magical and action-packed. I can’t really say if this really resembles PJO but I can say that people who love that series would surely love this new series as well.

The Mostly Invisible Boy features Casey, who the title refers to as mostly invisible boy. I didn’t connect with him right away, to be honest. But he grew on me. I ended up loving him as the story goes and even became a favorite, which means I really want to see more of him in the next books. He’s definitely a character that’s easy to root for. I think he’s very brave and kind. I especially love his relationship with his little sister, Gloria. Gloria, on the other hand, was too easy to like. She had my heart right from the moment I met her on the page. She’s so cute. Gloria and Casey’s relationship is so sweet and I love sweet siblings relationship in books. Speaking of relationship, I also loved the friendship they develop with Luciana, a Sylvan.

As an opener of a new series, it did a great job at introducing the characters and making the readers fall in love with them. It also introduces a very interesting world. Secret worlds hidden in real world always hold my interest. Books like this helps me fool myself to think that magic is real, it’s just hidden. Hehe. Sylvan wood is very interesting and intriguing. I know there’s more to it than already shown. Same with the magic itself. This is not all. I know the Sylvan Woods still holds more secret and I can’t wait to discover them.

The writing is very engaging. The pacing was just enough and the story flowed perfectly. Overall, this is a well-executed story and I can’t wait to meet more characters and creatures. This author is a new favorite of mine.

RATING: 4 blissful pages with lilies

If you love magical worlds, monsters and adventure stories, I highly recommend this book.


AJ Vanderhorst has had many jobs, including journalist, paramedic, escape artist, and baby whisperer. One time in fifth grade, he built a traffic-stopping fort in a huge oak tree, using only branches and imagination, and slept there for a week.

Now he and his wife live in a woodsy house with their proteges and a ridiculous number of pets, including a turtle with a taste for human toes. This makes AJ an expert on wild, dangerous things—invisibility spells, butcher beasts, hungry kids, you get the idea.

He is the only author in the world who enjoys pickup basketball and enormous bonfires, preferably not at the same time. He and his family have drawn up several blueprints for their future tree castle.

 LINKS: Website | Goodreads | Twitter | Instagram

Don’t forget to add this book on your TBRs. I’m sure you’ll enjoy reading it as much as I did. 🙂

Have you read this book? Or planning to? What do you think of it? Let’s chat.

4 thoughts on “Blog Tour: The Mostly Invisible Boy by AJ Vanderhorst (#TheWriteReads)

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