Ronda Hale

FBI Special Agent Grace Billingsley tracks serial killers, using her skills as a psychiatrist and behavioral analyst to get dangerous people off the street and safely behind bars. But prison psychiatrist Sam Monroe knows that just because a killer is incarcerated doesn't mean they're not a threat. His own father, Peter, is a serial killer-in prison but certainly not out of Sam's life, as much as he wishes he was.

Kit Kenyon is a first-rate hostage negotiator. Noah Lambert is a good detective with excellent instincts. These new partners have hardly had time to get used to each other when they are thrown into a grisly murder case. As evidence mounts up and more victims are found, Kit and Noah realize that they are on the hunt for a serial killer. The problem is he may be hunting one of them, too.