Midnight Soul by Kristen Ashley — book slip

Noctorno Hawthorne, an undercover vice cop, finds himself caught in a world of magic and parallel universes. He meets Franka Drakkar, a woman who hides behind a mask to protect herself in a world filled with malice and intrigue.

As Noc discovers Franka's secrets, he realizes she is the one he has been destined to love. Despite her reluctance to form bonds, Noc is determined to win her heart and bring her back to his world.

Series finale of the Fantasyland series.