Oooooh, I really really liked this one! Boaz, the recluse, with a shitload of issues and a very mysterious past, was a wonderfully crafted character and remained somewhat mysterious until the end.
The mystery and other parts weren't extremly "realistic", but it also wasn't overly ambitious in that department - so it worked out very well, at least for me. And I just loved Boaz and felt for him so damn much. It even could have been a 5 star read for me, but the ending just wasn't my cup of tea. Let's just say: It was a little too much of everything and not exactly what I was hoping for. Overall, it was still really good though and I enjoyed it very much.