Altered State — Tom Lowe

We have been led to believe that the most private and secure possession we own is our thoughts. What if that isn't true? When police call in forensic psychology professor Elizabeth Monroe to consult in a series of strange murders, for the first time in her stellar career, she's not sure where to begin. Elizabeth sifts through clues that will lead to a psychological profile of the killer. But when the murders are being committed by average people with no criminal history, she must investigate a place where evidence hides. The subconscious mind. Elizabeth discovers a path that will lead to a diabolical scheme bringing her face-to-face with the most calculating criminal mind she has ever encountered.