Cassandra McMurtrey has a family. One with a loving mother and a father too full of cheesy dad jokes for his own good. They're the best parents a girl could ask for, and they've given Cass a life she wouldn't trade for the world. She has everything she needs-except maybe one thing she wants. Like to know who she is. Where she came from. Questions her adoptive parents, no matter how much they love her, can't answer. Mysteries she feels she must solve. Cass can't stand the thought of hurting the family she has by searching for a woman she's never met. But eighteen years ago, a teenage girl wrote Cass a series of letters. Letters which have been sealed in the Idaho Bureau of Vital Records since the day she was born. Letters which might just hold the answers Cass has been searching for. Clues waiting to be found.