With the outbreak of the American Revolution, Abigail Lovell's family is torn apart-while her schoolmaster father is an outspoken loyalist, she and her two brothers engage in acts of espionage to undermine the British in Boston. Her sickly older brother, James, operates the patriots' spy ring. Abigail acts as a courier, eluding increasingly aggressive British patrols and her younger brother, Benjamin, slips out of Boston to fight alongside Abigail's love, Ezra, in the battles at Lexington and Concord. With the help of her friend, Rachel Revere, Abigail smuggles money and supplies out to her brother, Ezra and Rachel's brother, Paul.

But when a British sergeant is found murdered, Abigail stands accused and, in possession of valuable intercepted information, she now must fight to save herself and those she loves. In the tradition of Rose and Girl with the Pearl Earring, The Schoolmaster's Daughter is the story of a family torn asunder and a determined young woman who makes courageous sacrifices for her country.