I really enjoyed reading this book and I didn't expect all of which transpired to happen (42, Xavier, Otto and Rose). I really liked the ending but I was saddened when 'young Xavier' left with 42 because it felt like he died a second death. I really wanted Rose and Bren to get together but it makes sense that Rose would develop feelings for Otto. The ending really showed how much they really cared about each other and I could really relate.