"Before Owen Michaels disappears, he smuggles a note to his beloved wife of one year: Protect her. Despite her confusion and fear, Hannah Hall knows exactly to whom the note refers- Owen's sixteen-year-old daughter, Bailey. Bailey, who lost her mother tragically as a child. Bailey, who wants absolutely nothing to do with her new stepmother. As Hannah's increasingly desperate calls to Owen go unanswered, as the FBI arrests Owen's boss, as a US marshal...

During World War II, when the newly minted Jet Propulsion Laboratory needed quick-thinking mathematicians to calculate jet velocities and plot missile trajectories, they recruited an elite group of young women -- known as human computers -- who, with only pencil, paper, and mathematical prowess, transformed rocket design and helped bring about America's first ballistic missiles. But they were never interested in developing weapons -- their hearts...