City of Gods and Monsters by Kayla Edwards

Welcome to the city of Angelthene. We hope you survive.

Loren Calla has only ever been ordinary. As a human struggling to survive in a city that caters to the needs of vampires, werewolves, witches, and other supernatural creatures, she always assumed her life would remain simple, predictable, and as safe as her world would allow.
Until she barely escapes abduction at the hands of Darkslayers—supernatural bounty hunters that possess the Sight, a magical tracking ability that allows them to see a person’s aura—and one of her friends is taken in her place. The abductors are demanding a ransom: Loren’s life in exchange for her friend’s safe return. Loren will do whatever it takes to get her friend back—even if it means accepting help from Darien Cassel, the leader of the Seven Devils, the most feared Darkslaying circle in the city.
Darien specializes in tracking down demons and criminals that are better off dead than alive, so when he takes a job to track down Loren and finds out she is human—and couldn’t hurt a fly if her life depended on it—he decides to protect her instead of turn her in for a reward. As much as Loren doesn’t want to admit it, Darien is her best and only chance at finding her friend alive, if she can somehow manage to get along with him—and not fall head-over-heels in love with him in the process, which is far easier said than done.
When more women start disappearing, and some of them slowly turn up dead, Loren and Darien’s search for answers takes them deep into Angelthene’s corrupt underbelly, where they discover a dark secret that threatens to unravel their world. And when tragedy strikes, Loren learns that love can make an ordinary person do extraordinary things.

Please note: This book contains explicit content, including violence, mature language, sexual content, drug abuse, and suicide. It is not intended for anyone under the age of 18.