Venor - The Werewolf Novels, #1

A queer horror/supernatural mystery novel with tinges of romance. Renzo's a bartender at the Silver Crow Pub. He's technically part-owner, but since his ex has the majority stake in the bar, Renzo often gets punted off to the side. An average midweek night turns dangerous when a patron seems to turn almost...rabid. As Renzo moves to defend the others in the bar, he's saved by another patron. Cedrick went to the Silver Crow looking for information on his latest case - a woman who went from mild-mannered schoolteacher to frothing rage and mindless fury, seemingly overnight.
She died, and her brother wants answers. So Cedrick took his private detective skills to the Silver Crow, where the sister was last seen, but winds up using his fighting prowess to defend the bartender from a guy with a switchblade and blackened teeth and gums. What starts in the Silver Crow takes Renzo and Cedrick all over the city of Bennek and beyond, leaving them to grapple with their pasts, their attractions, and their secrets.
And when Renzo's ex is taken hostage, they team up again - this time to head back to a city on the brink of riots and to infiltrate the rehabilitation facility that had once saved Renzo's life. Whoever is feeding people tainted drugs is causing mayhem across Bennek, and their sinister motivations are unknown.