When Quinn Cruz receives a cryptic text message from her older sister, Nora, she doesn't think much of it. They haven't seen each other in nearly a year, and their relationship consists mostly of infrequent phone calls and the occasional e-mail. But when a haunted-looking Nora shows up just hours later, a chain reaction is set into motion that will change both of their lives forever. It's a matter of life and death, of family and freedom, and the lengths a woman will go to protect the ones she loves.