Out of Reach — Kate Bold

Dylan First, brilliant psychologist, is haunted by the horrific discovery of her past: her mentor and father figure, a brilliant psychiatrist and professor, was secretly a serial killer.

He is behind bars, but with everything Dylan thought she knew turned upside down, she feels lost when the FBI suddenly comes knocking: a new killer is using her mentor's trademark signature. And they need Dylan to dissect his mind and stop him before it's too late.