First, a couple in Camden, Delaware, restores their 1807 house and discovers it was once home and laboratory to an inventive dentist who created some of the first dental compounds. Next, some homeowners in Pittsburgh, Pennsylvania, are intrigued by the mysterious diary they find in their basement. With a little detective work, they finally discover something about the author, a previous owner. Finally, homeowners in Juneau, Alaska, work to complete the restoration of their 1906 house and along the way uncover a history connected to a once-prominent citizen.