Beth Picard has always felt a little different from her friends. For one thing, she doesn't remember anything about her life before she and her mother moved into the house they live in now. Then one day, Beth learns about a girl in a nearby town who looks like her -- exactly like her. Could it be a long lost sister or cousin? Does this girl hold the key to Beth's memories? And if so, does Beth really want to know the truth about her past? Does she even have a choice?