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.

Conceived bearing the lion strain of the virus, Roan is the only fully functioning virus child in the country—maybe in the world. But that doesn't mean he's okay. He's still struggling with the death of his husband and the guilt of finding new love; his old enemy, the Church of the Divine Transformation, is becoming increasingly hostile; and he's taken on a tragic cold case involving a long-missing boy.

As Roan fights to control the lion inside him, his world explodes with all kinds of trouble. The leader of the church is ramping up the violence against him, calling Roan out as a traitor to his kind. There's a loose Infected terrorizing the city. And Holden, male prostitute and Roan's unofficial assistant, brings him a case involving the suspicious death of one of Holden's clients, which puts Roan far too close to a murderer for his state of mind....