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Love takes a scandalous vow.

Ava-Marie

Things at the Institute look darker than ever. I’ve lost all my friends, my hope, and the person I love.

To make matters worse, the prison is planning something nefarious. Experiments are being performed on inmates at the Institute, to satisfy the Warden’s craving to find a demigod.

I’ve sworn to uncover the Warden’s plans, and go underground to learn just what he’s plotting. Unfortunately, I can’t find answers without putting my soul on the line.

And the consequences are going to propel me straight to the afterlife.

Charlie

The Warden promises the Institute is safe, but I know better. He's hunting people down-- people like me. To protect us all, we must start a revolution.

I must step up and become the leader everyone is searching for. I've decided to start teaching magic in secret to a group of prisoners I trust. When the time comes, we’ll be ready to face our enemies.

Students are disappearing from the prison, and we don’t know where they’ve gone. Now, I’m next in line to vanish.

But there’s a way around the law. To remain where I’m needed most, Ava and I will have to make a promise that will change our entire lives.

Sharing a bed with the enemy is one thing. Marrying her is another.

**

Magic ignites into chaos in The Infernal Underground, the third installment of the Hidden Legends: Prison for Supernatural Offenders series. Continue this haunting love story packed with fantasy action and paranormal adventure. This is a dark romance series that will leave readers gasping for more.

This series takes place in the Hidden Legends Universe, along with the Academy of Magical Creatures series, University of Sorcery series and the College of Witchcraft series. Each series stands on its own and can be read in any order. This is a full-length novel over 600 pages. Recommended reading age 18+

728 pages, Kindle Edition

Published February 28, 2022

31 people are currently reading
151 people want to read

About the author

Megan Linski

98 books567 followers
Megan Linski lives in Michigan. She is the author of more than fifty fantasy and paranormal novels which feature themes of friendship, community, and healthy romantic relationships. She has over fifteen years of experience writing books alongside working as a journalist and editor. She graduated from the University of Iowa, where she studied Creative Writing.

Her passions include ice skating and horseback riding. In her free time she enjoys dancing in the snow and drinking fancy coffee while at her natural habitat, the mall.

Megan advocates for the rights of the disabled, and is an activist for mental health awareness.

Megan co-writes the Hidden Legends Universe with Alicia Rades. She also writes under the pen name of Natalie Erin for the Creatures of the Lands series, co-authored by Krisen Lison.

Awards Megan has won include;

Best Fantasy Book of the Year 2019 by Once Upon a Book

Best Co-Authored Book of the Year 2022 by Once Upon a Book

Author of the Year 2022 by Once Upon a Book

Keynote Speaker at Once Upon a Book 2023

Best Book Friends (Ava and Kallie) 2023 by Once Upon a Book

Featured in the FOX Teen Choice Awards Gift Baskets

Two-time Reader's Favorite Five Star Read (Bronze Medal Finalist)

Winner of Amazon's Kindle Scout Competition

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Displaying 1 - 14 of 14 reviews
Profile Image for Nancy (The Avid Reader).
3,065 reviews128 followers
March 2, 2022
In The Infernal Underground, the third book in the Prison for Supernatural Offenders series. Strange, evil things are going on in the institute. Experiments are being done on the students. The search for a demigod and the prince is still underway. Charlie, Ava, and the rest of the crew are doing their best to keep the identity of the prince hidden from the warden.

Students are mysteriously disappearing from the prison in broad daylight. No one knows what is happening to them or where they are going. The prison is warded against anyone escaping. No one can use their magic to escape. But Charlie, Ava, and everyone else is working hard for a way around the warden’s magic.

War is on the horizon, a war between all the paranormal creatures as they fight against one another. A war not unlike a World War, war. If Charlie and Ava don’t come up with a plan to stop the warden then war is imminent for all.

I felt so bad for Charlie and Ava as they have broken up. Charlie is so sad without his beloved by his side. And Ava is not much better as they both miss each other so much. But they are trying really hard not to let it show.

The Infernal Underground is a very enchanting and interesting read as once I picked it up there was no way I was going to lay it down until that last page came into sight. From beginning to end I kept trying to guess as to what would happen next but without much success as it kept me in the dark from one end to the other with twists after twists.

My favorite parts were in the fighting arena with Charlie and when they were using their magical powers. I could just see it all as it played out in my head as if I was there with them. I can’t wait for the next installment in the Prison for Supernatural Offenders series, The Assassin's Destiny to see where the authors take us and to explore more of this world.

I highly recommend The Infernal Underground to all fans of paranormal creatures. Grab your copy of The Infernal Underground today!
Profile Image for Marianne Scott.
Author 9 books178 followers
September 11, 2023
It’s hard to review books so far into the series without major spoilers, but let me say that I vehemently HATE the villain in this series. It’s a visceral want to reach through my kindle and punch him in the face kind of hate, which I think speaks to really great writing.

I love the setting in this, how it has the comfort of an academy series with the high stakes of a magical prison.

If you’re looking for a unique twist on an urban fantasy that has all the magical races (angels, Fae, vampires, elementals and more) plus creatures (including a shape shifting familiar who is a husky/fire unicorn/narwhal/phoenix), give this one a shot!
Profile Image for Devika.
705 reviews20 followers
December 27, 2022
The Infernal Underground is the third part of the Prison for Supernatural Offenders series, and also a part of the Hidden Legends books collection. In the first two parts, the first adventures of Charlie and Ava-Marie were told. In this part they are back in the prison, and have to figure some things out. But when even the prison doesn’t seem safe anymore, they have to find a way to stay safe. But will they be able to do this?

Find out in my review on my blog Boekensteeg
Profile Image for Jay A.  Aulds.
124 reviews1 follower
February 28, 2022
Inferno Explosion!

As a disabled person, it's always nice to see more broad range of disabilities being portrayed in the Hidden Legends series. But in the Prison for Supernatural Offenders, Alicia and Megan are going all out in this one.
NOt only there are characters returning from old books, but there are new characters revealed with new answers that finally makes sense from other series that I'm sure many of us readers pondered over. But if you're willing to be patience, then you won't regret reading this latest installment.
Sure, prison life can be a bit bleak but heck.. in the Hidden Legends universe everything and anything are possible!
the mania, the fight, the confusion, the wildness of every characters that thrives from this book just seem to truly come alive and the two writers are going to one day make this into a Motion Picture serie. Just you wait.
If you have not read the Villan Institute or the Criminal Lair, you'll need to be warn on emotional trauma that endures in these characters and just be prepared. But in my opinion? Ithink everyone can handle it.

Thank you Alicia and Megan for yet another amazing installment of the Hidden Legends books. Don't stop the superb job!
Definitely worth spending $8.62 on this book. I'll say that for sure
Profile Image for Barbara Marie Warner.
1,601 reviews2 followers
November 9, 2025
The Infernal Underground (Hidden Legends: Academy of Villains Book 3) ~~ By this book, Ava Marie and Charlie’s relationship takes a turn that had me practically yelling at my Kindle. They’re both fighting their own demons — literally and emotionally — but they just can’t stay away from each other. I loved seeing Ava come into her own, embracing her powers and standing up for herself, even when it means going against the people she once trusted. The story gets darker, and the plot twists had me gasping. Audible made it even more intense — the voice acting pulled me straight into the danger, heartbreak, and raw emotion of every scene.

I would definitely recommend this book and series and can’t wait to start on the next book. If you want to know what happens next, you’ll just have to read this series yourself — you won’t regret it.
2,870 reviews11 followers
March 3, 2024
An eventful paranormal & urban fantasy romance. Ava Marie, Charlie, and their friends face more obstacles. Students are disappearing (probably on the warden's orders). It continues to be unclear how to fulfill their prophecies.

This story contains emotionally challenging scenes. The end of this tale is magnificent.

Action-packed. Easy-to-read. Entertaining. Romantic. Scary. Tragic. Unpredictable. Whimsical. Wonderful characters.

I received a review copy of this book from a third party. This is my honest review.
Profile Image for Jennifer Lil'n  Dunski.
1,510 reviews15 followers
March 4, 2022
This story is incredibly chaotic in both the best and worst ways! The details are so tantalizing and horrid, you can't help but go through so many emotions. The authors truly put us through the dangers and intensity of a very intriguing story
Profile Image for Stephanie Ring.
281 reviews5 followers
March 8, 2022
Brace yourselves for a tear jerker!

Once again you ladies have out done yourselves! I’ve read every single book you have published so far and every new book is better than the last!
Profile Image for Michelle VanDaley.
1,701 reviews5 followers
March 13, 2022
Book 3 continues this fantastic fast paced series. I am completely invested in these characters and love the world the story is set in. Each book has been captivating from start to finish. The characters and their abilities are unique and I can't wait for more
Profile Image for Amy.
696 reviews8 followers
August 17, 2022
THIS BOOK IS EVERYTHING!!! HOLY DAMN ANCESTORS!!! HOW I LOVEE THIS AUTOR!!! SHE ALWAYS SURPRISES ME!!! I AM SOOO OVERWHELMED RIGHT NOW!!! this story.... why why why why!!! I can't!!!! I neeeeeddd theee neeexxxtttt oneeee
I must know what happens next I can't wait a whole freaking year!!!!!
WHYYYY
Profile Image for Mari.
3,113 reviews2 followers
December 16, 2025
This story has so much drama, I’m not sure if I can read on without a phase of resting. I enjoyed all the plot twists, but there’s so much sadness there as well, that it’s pulling on my emotions. Still a good book and 5 stars from me.
Profile Image for Cleocutie.
3,108 reviews24 followers
March 1, 2022
Great addition to the series. I love seeing how this story moves along and stays interesting with new twists throughout.
1 review
May 2, 2024
I am a big fan of indigenous / native american / first nations books. Pray the the ancestors is starting to trend for me instead of pray to god. Enjoying this series.
Displaying 1 - 14 of 14 reviews

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