Successors. The Warden, #1

The WardenAn enigmatic contemporary fantasy series that straddles the line between the real world and the paranormal world. Book 1: Successors Be prepared to be imprisoned by The Warden. Hidden deep in the arctic tundra, an unnamed prison holds creatures straight out of myth and legend. Vampires caged in the shadows, devils and demons sequestered and silenced, and an ancient power locked behind spells older than civilization itself.
The caretakers of this prison are sworn to secrecy, trained to subdue the supernatural, and bound by the rules intended to keep them alive. For longer than he cares to remember, Danato has served as the Warden of this secret supernatural prison. His duty is clear: maintain the prison, punish the offenders, and protect the world from the nightmares it holds. But time is running out. He is just one in a long line of wardens-but Danato is the last.
Without an heir to take his place, he must find a successor. In a world where failure means catastrophe or death, it's no easy task to choose who to trust. Bringing someone new into this hidden world of vampires, werewolves, and things far worse is dangerous enough. But once the choice is made, there's no going back. Not for them. and not for him. Successors is the beguiling first book in The Warden series by Felicia Jedlicka-an expansive fantasy story that piques your curiosity at every turn.
The dynamic characters leave you begging for more.