This is a fantastic book. It has everything a psychological thriller needs to make it to the number one spot: an excellent premise, multi-dimensional characters, swift pace and issues to think about once the reader turns the last page.
On the surface, the book is about a woman who finds her perfect match on a dating site, only to have him disappear in mysterious circumstances. However, the book is also about topical issues like loneliness caused by the lack of face-to-face interaction, family love, guilt, forgiveness, return to nature, healing.
Probably Lisa Unger's finest yet.