This was my first Sarah Dessen book and I really really liked it. The main character, Ruby, wears a necklace with a key on it that becomes symbolic of letting go of her past and embracing her future. Ruby is in high school and is abandoned by her mother. She ends up living with Cora, her older sister, who has a completely different lifestyle, a wonderful husband, and an interesting young male neighbor who befriends Ruby. I love characters and this book is studded with interesting ones. Among them are the boy who tutors Ruby in calculus, the woman who hires Ruby to work with her in the mall, the young woman who works at the movie theater and becomes her friend. Ruby is shedding her old life gradually and living fully in her new life. The book is very sweet and ties up very nicely at the end but is also very realistic. I love books about second chances. This was a super one! Terrific writing, too. This is an author to watch!