The Pack’s Downfall by Casey Morgan

Tamir Stayman’s pack is in chaos.
His brother, Pax, has been exiled, and Tamir himself is struggling to recover from a silver-inflicted wound that threatens his ability to shift.
The pack’s feisty medic, Kenzie Hunter, is doing everything she can to heal his arm, but it’s unlike any injury she’s ever seen; without the Stayman Pack’s normal immunity to silver, the effects of the dangerous metal on a shifter are tricky.
And something is causing the pack to lose their magical powers in that regard, during the worst timing ever, with the rival Mathis pack closing in on their territory.
Trying to work on stubborn, impatient Pax threatens to drive Kenzie crazy…and so does his rock-hard six pack and the rest of his rippling muscles. Kenzie and Pax have never exactly gotten along, but she’s determined to ignore the conflicting feelings of hate and attraction she has for him so that she can focus on her job.
Tamir can’t help but look at Kenzie, or at least, her curvy body and beautiful eyes, in a new light as she works so hard to help him, but he maintains his tough second-in-command exterior so that he can protect his heart and focus on his pack’s well-being. To top it all off, a mysterious newcomer to the pack named Flint is whispering in their alpha Anson’s ear, and Pax is worried that Anson is putting too much trust into this stranger.
Can Tamir and Kenzie work together despite their tumultuous history to solve the mysteries behind the pack’s weakening immunity, Pax’s disappearance, and lone-wolf Flint’s possible connection to it all?
And can they resist the sizzling chemistry that draws them together? Or might the secret to saving their pack from downfall and defeating the Mathis pack be in realizing that the person whom they each thought was their enemy is actually their mate?