Outcast by Lexi Blake

On the hunt for a vicious killer, Kelsey discovers that the true threat lies closer than she could have ever imagined.

It’s been months since Trent Wilcox was sentenced to exile, but Kelsey hasn’t given up on finding a way to bring him home. Grayson Sloane doesn’t share her enthusiasm. Loving two men is challenging enough without them being at each other’s throats, and she is unwilling to compromise on the future she knows is meant for them.
Kelsey’s only hope for bringing them all together comes in the form of the Hell lord who insisted on Trent’s exile – Gray’s father. Lord Sloane is willing to acquiesce on Trent’s punishment if Kelsey will do one little job for him. A stray wolf is on a killing spree in Wyoming and he’s killed a number of witches in Lord Sloane’s service. The situation is made all the more complicated by the presence of a sinister werewolf cult in the area. Lupus Solum is known for being cruel to their own kind, and even worse to outsiders.
Caught between a craven wolf cult, a brutal killer, a Hell lord, and a mounting pile of bodies, Kelsey is going to have her work cut out for her. But if she can solve the case, she might have a chance to earn her happily ever after.