I didn't think the murderer was the murderer. When it was found out who the murderer was, it was kind of scary because stuff like that happens for real. Maybe not to that extreme, but it's not unlikely that people are killed for those reasons. Because of all of that, I felt sad for all involved.
I like all the characters in the book. They all seem to serve a purpose. Even the twins who can be a tad bit annoying, but I think that's the point of the two and the other characters roll their eyes with you.
So, Dom or Nate? I don't care one way or another because they both seem alright. Nate needs to put on his big boy pants and say something instead of standing around fuming because he didn't. But I kind of want Dom to be the guy because, well, I don't know. Okay, because he wears a suit!