The Same Bones by Gregory Ashe

Predator. Prey. Pack.

When Teancum Leon’s ex-lover confesses to murder, Tean doesn’t believe it. Sure, Ammon has a dark side, but he’s not capable of killing someone.
Except Tean seems to be the only one who feels this way. Tean’s boyfriend, Jem, is more than willing to take Ammon’s word for it. The police are thrilled to bring the official investigation to a close. And Ammon’s wife, Lucy, is afraid of what he might have done in a fit of rage.
With the police no longer looking for answers, it’s up to Tean and Jem to find the truth. Their investigation leads them to more victims—and to the realization that a serial killer is at work, and he’s targeting gay men.
But someone else is stirring on the high steppe. Someone even more dangerous. Someone who has been content, until now, to watch. And wait.
Until Tean and Jem wake them up.

The Same Bones begins a follow-up series and should not be read as a standalone. Jem and Tean’s story starts in The Lamb and the Lion book one, The Same Breath.