The location of the glymera’s notorious prison camp was lost after the raids. When a freak accident provides Nyx clues to where her sister may still be doing time, she becomes determined to find the secret subterranean labyrinth. Embarking on a journey under the earth, she learns a terrible truth—and meets a male who changes everything, forever.
The Jackal has been in the camp for so long he cannot recall anything of the freedom he once knew. Trapped by circumstances out of his control, he helps Nyx because he cannot help himself. After she discovers what happened to her sister, getting her back out becomes a deadly mission for them both.
United by a passion they can’t deny, they work together on an escape plan for Nyx—even though their destiny is to be forever apart. And as the Black Dagger Brotherhood is called upon for help, and Rhage discovers he has a half-brother who’s falsely imprisoned, a devious warden plots the deaths of them all…even the Brothers.
Nyx realizes she can get into the prison her sister has been in for fifty years and hopefully break her out but her grandfather tells her a huge secret, he's the one that turned her in and she belongs there. Nyx doesn't believe him for a minute and goes to rescue her sister.
The Jackal has been in this underground prison for 100 years after he was accused and convicted of something he didn't do. The prisoners in this place are treated horribly and the guards and person in charge are pure sadists. When the Jackal finds Nyx inside looking for her sister, he decides to help her because he knows she'll wind up dead if he doesn't.
Once Nyx and The Jackal find a way to trust each other a little, the temperature rises because they lust after one another and give into that lust pretty fast. While The Jackal is trying to keep her safe as he and his friends help her look for her sister, they get to know each other better and we get The Jackal's back story.
I found this book quite slow in the beginning almost until the end of the book when things finally pick up because of the twists the story takes. We also find out why The Jackal has stayed for so long and hasn't tried to escape. His story was sad, what was going on inside this prison was sad but it did end up having a good ending.
I give this book 3 out of 5 stars.