AnnaSophia Robb and Hannah James star on the ‘One Equal Temper’ episode of the historical medical drama television series, ‘Mercy Street.’ While many people may have diverse political and lifestyle views, they can still bond over the natural desire to help others who are in need. That’s certainly the case for the opposing sides of the medical television series, ‘Mercy Street.’ The historical drama, which is set during the American Civil War,’ stars Mary Elizabeth Winstead as the real-life nurse-abolitionist, Mary Phinney. The fictionalized version of the nurse volunteers at the Mansion House Hospital in Alexandria, Virginia, where people from both the North and South vow to overcome their differences to instead focus on healing the sick and wounded.