After Antietam, the Greens suffer a setback and Pinkerton's inquiry heats up. Foster and Samuel visit Foster's family plantation, where they intervene in a difficult labor. The hospital staff unites to oust their chief. Mary's condition worsens.
Based on true stories, MERCY STREET takes viewers beyond the battlefield and into the lives of Americans on the Civil War home front as they face the unprecedented challenges of one of the most turbulent times in our nation's history.