I now have an unsettling feeling that I've been referring to Theo as the older brother. Have I? I'll have to go check.
I've read the next section and have notes together for a post but I'm going to wait to write it until the ink is (pixels are?) a little dry on the last one first. :)
I hadn't thought about the father reappearing. And yeah, Emma and Rich were the couple I picked out from the beginning. I can't think of specific examples right now but that seems kind of Picoultish -- that the detective/lawyer and the mother of the suspect get together. *Nineteen Minutes*, maybe?
re: Mark Haddon: I think he *nailed* the Asperger temperament in his prose. Nailed it. In fact, I was going to mention that as a comparison in my post but I forgot. You really should read that book, but I don't recommend it for vacation because it only takes a couple of hours to read.