No, no, no, no, no.
If this book/series is going to be all about Lucas Davenport's dick and where he sticks it, I'm going to be irritated. The story is good. But for fucks sake, a detective would NEVER EVER EVER EVER EVER have sex with a woman who is a victim/witness in a case he is assigned to investigate. Unless he wanted to be fired and have the murderer walk.