First, Benita and Alan Giltzow renovate a 1904 Queen Anne and discover that it has a place in the political history books. Then, Donna and Rick Chambers restore an 1820 Federal-style home and make discoveries that rewrite history. Finally, Carol Stone and Fred Hartmann buy an 1883 Victorian in Stony Brook, New York, where Hartmann's metal-detecting hobby uncovers keys to the home's history.