Emmy Rane is married at nineteen, a mother by twenty. Trapped in a life with a husband she no longer loves, Baby is her only joy. Then one sunny day in September, Emmy takes a few fateful steps away from her baby and returns to find her missing. All that is left behind is a yellow sock. Fourteen years later, Sophie, a homeschooled, reclusive teenage girl is forced to move frequently and abruptly from place to place, perpetually running from what her mother calls the "No Good." One afternoon, Sophie breaks the rules, ventures out, and meets Joey and his two aunts. It is this loving family that gives Sophie the courage to look into her past. What she discovers changes her world forever... The riveting stories of Emmy and Sophie—alternating narratives of loss, imprisonment, and freedom regained—escalate with breathless suspense toward an unforgettable climax.