Night Fall on Dark Mountain - Night Fall Series, #6

After the death of one of the members of the super-secret police unit aligned with the Vampire Council in southern Florida, werewolf Max Weir becomes the chief suspect. Sure a greater villain has used a were-clan's hatred of vamps to strike against the unit, Max travels to the mountains of North Carolina to seek the truth and hopefully renew the centuries-old truce between the weres and vampires. Alec Weir has a problem on his hands.
The new sheriff on Dark Mountain must walk a fine line between upholding were-clan laws and saving his vamp-loving brother from certain death. Alec must find the traitor in the clan responsible for the attack on the vampires or watch his brother die. If that wasn't enough, his chosen mate, Stasia McGwyre, seems to still hold a candle for Max. NOTE: This book was previously published as Silver Bullet, but has since been revised.