on and secretary of state seward were planned in part at a boarding house owned and operated by mary surratt. after president lincoln's assassination mary sur rat was taken into custody and accused of participating in the conspiracy. she was tried by a military tribunal where shefgs not given the opportunity to testify and later sentenced to death and executed. coming up, a group of chicago lawyers, judges, and historians retry mary surratt as if in a civilian court and leaves it up to the audience to decide whether she is guilty or innocence. this lasts about an hour and a half. >> the law is a living, breathing entity. it reflected the values of the 19th century society and continues to reflect those values today. ideally, the law treats everyone equally and justice, the implementation of the law, is blind favoring neither the prosecution nor the defense. at other times justice is not only blind but deaf, stubborn, frightened, and reactionary as well. this retrial is based on an actual historical episode. we always like to ponder what if. what if the people who plotted the assassination of