When Alexandria was occupied by Union Troops on May 24, 1861 the citizens were forced to choose sides. Loyalties were often divided and those who sympathized with the South had to live in an occupied city. Many people became spies, for both sides of the war. Carlyle House was a site known well by two civil war spies; Frank Stringfellow and Sarah Emma Edmonds. Join in on the action by decoding secret messages and trying your hands at disguise. What kind of a spy would you be?