Blood is Thicker Than... Series by Abbie Roads

He’s the son of a serial killer.She’s his father’s only surviving victim.He’s obsessed with her.She’s frightened of him.Before it’s all over they’ll need each other to survive.Cain Killion’s life has revolved around blood. From a childhood of torture by his father, to his gruesome ability to solve crimes. When a current case is directly connected to his past, there’s only one person with answers--but she isn’t talking, and the bodies are stacking up. The solution: Kidnap her.