A very well written story about a terrible disease. I loved the O'Briens as a family. Everyone was so real I felt as though I knew them personally. Reading this book there were passages that were laugh out loud funny, and other parts that had tears running down my cheeks. Sometimes even doing both laughing and crying at the same time. I loved Katie, the youngest O'Brien and really enjoyed the part where she introduces Felix to her family. This was a terrific book, a wonderful education as well as a heartbreaking look at Huntington's Disease.