Sinner follows Cole St. Clair, a pivotal character from the #1 New York Times bestselling Shiver Trilogy. Everybody thinks they know Cole's story. Stardom. Addiction. Downfall. Disappearance. But only a few people know Cole's darkest secret -- his ability to shift into a wolf. One of these people is Isabel. At one point, they may have even loved each other. But that feels like a lifetime ago. Now Cole is back. Back in the spotlight. Back in the danger zone. Back in Isabel's life. Can this sinner be saved?