After suffering a tumble down the corporate ladder, Cassie Woodson finds the only way she can pay her bills is to take a job reviewing correspondence for a large-scale fraud suit. While sorting through emails, something catches her eye: the tender and private exchanges between a partner at the firm, Forest Watts, and his wife, Annabelle. Cassie knows she shouldn't read them. But once that door opens, she can't look away. By peeking into their perfect life, Cassie finds renewed purpose and happiness. But when Cassie orchestrates a meeting with Forest, she doesn't simply admire Annabelle - she wants to take her place. And she's armed with the tools to make that happen.