Liz Crawford steps off the plane, home after six years in the space program and two in a Texas prison. She expects to be met by her sister, Sara, and to share her apartment, temporarily. Instead, she discovers Sara and two friends have vanished. The police are slow with answers, and Liz takes up the search, following the meandering trail of her sister's life. Along the way, she bends the law, risks her freedom and her life, and learns just what she is capable of in the most extreme circumstances.