Whoa. This was hard to put down yet I felt unsettled and almost icky while reading it. The description is pretty vague because of course this is a psychological thriller, but I'm pretty sure I wouldn't have started this if I knew it was about

Spoiler

human trafficking

. While it is all told from one point of view, it quickly moves back and forth from past and present. The glimpses of the past are not told in chronological order, which was confusing at times, but I see why the author chose to reveal bits and pieces out of order.