I read a lot of crime thrillers and forget 90% of them right after finishing them, but this one stuck out, largely because the lead character is so much more intriguing than "Yet another lead detective/cop/agent". The heroine was captured by a serial killer and kept in a lightless basement by him for years, until her escape starts off the story. Her trauma, gradual recovery, alienation from society, inability to fit "comfortably" into social circles, and her intensively focused "reading" of people makes her a memorable lead. After years of having her entire existence devolved to focusing solely on this one man, and his body language, what he might do, what any casual twitch or mannerism might signify, she is hyper-attuned to human behavior in general. The book covers her gradual re-integration into the world, and her attempts to aid the police department in solving a similar case of an abducted girl. Gripping and intense, with a standout heroine.