In Dark Places — Michael Prescott

Robin Cameron is a brilliant scientist on the verge of a breakthrough in psychiatric treatment for mental patients. But first she must enter the unforgiving darkness of their minds.

One patient is Justin Gray--a serial killer who favors teenage girls. For all Robin's research, she'll never understand his true motive or guess what he has planned next...beginning with his escape.

Another patient is traumatized LAPD cop Alan Brand. He doesn't want Robin playing with his memories--because he has a secret about his last night on the streets that no living soul should ever know.

Then Brand disappears. So does Robin's teenage daughter. Now it's time for Gray to play with Robin's mind and lead her to a place far darker than she's ever ventured to before....