I think you will really like "Girl Gone" by Gillian Flynn...
Oh thanks! I did enjoy the Jacob book, and I actually heard about Girl Gone elsewhere recently. Going to add it to my Kindle samples!
I"m on the wait list for it at the library. I've read both her previous books; she's an, um, interesting stylist as a writer. Very dark. This book certainly has gotten great reviews-am interested to see how it reads.