"In the wake of Abraham Lincoln's assassination, seven men and one woman are arrested and charged with conspiring to kill the President and others. Against the ominous backdrop of post-Civil War Washington, war hero Frederick Aiken (James McAvoy) reluctantly agrees to defend the lone woman charged, Mary Surratt (Robin Wright), before a military tribunal. As the nation turns against her, Surratt is forced to rely on Aiken to uncover the truth and save...