It?s hard to keep close a person everyone keeps telling you is gone. It?s been sixty-five days since the accident that ripped Juniper?s world apart. Life without her kind, beautiful, vibrant big sister Camilla is a colder, darker place. Until she discovers the letter. The letter Camie wrote, but never got to send. It?s mysteriously addressed to ?You? and dated July 4th - the day of the accident. Desperate to learn the identity of Camie?s secret love, Juniper starts to investigate. But then she loses something herself. A card from her daily ritual, The Happiness Index: little notecards on which she rates the day. The Index has been holding Juniper together since Camie?s death - but without this card, there?s a hole. And this particular card contains Juniper?s own secret: a memory she can?t let anyone else find out. An unforgettable story of love, loss, mistakes and memories.