<p>If a sister asks a sister's life on her bended knees, they will pardon her; and they will win a thousand hearts by it. Edinburgh, 1736: Captain John Porteous is charged with murder and locked up in Edinburgh's Tolbooth prison, also known as the Heart of Midlothian. When news comes that he has been pardoned, a baying mob breaks into the jail, liberating its inmates and bringing Porteous to their own form of justice. But one prisoner, Effie Dean...