Wolf Moon by Addison Carmichael

Rosalyn Dane doesn’t believe werewolves prowl during the full Wolf Moon…but is one actually hunting her now?
When big game animal handler Rosalyn Dane drives to work at the Dundalow Wildlife Refuge, she discovers that one of her coworkers has been brutally murdered on the park grounds. Now she is forced to work with Detective Brian Lochlan of the Santa Barbara Police Department to find out what happened.
But as the preserve’s most valuable animals keep dying under strange, yet natural circumstances, Rosalyn takes a closer look and discovers that each deadly wound couldn’t have been made by another natural predator.

At least none she has ever encountered before.
Then just before she shares her suspicions with her lethally attractive police detective who has impossibly captured both her trust and her heart, Rosalyn discovers that Brian Lochlan isn’t all he claims to be either and might be hiding a dangerous secret of his own.
Which means Lochlan already knows who the true killer is. And that he wants Rosalyn for an entirely different reason than simple friendship.