Bloodlines — Andrea Speed

Sequel to Infected: Prey.  In a world where a werecat virus has changed society, Roan McKichan, a born infected and ex-cop, works as a private detective trying to solve crimes involving other infecteds. The newly married Roan is struggling to balance his work with his home life as he grows increasingly distracted by his husband Paris's declining health. One case with strong emotions attached takes up most of his time: finding the murderer of a missing rich girl. It's a family with secrets so toxic they'd rather no one investigate, and there's no shortage of suspects. But despite the dangers and obstructions involved, Roan won't stop... until he loses something infinitely precious as well.