The picturesque waters of the Mullica and the Delaware River belie the dark past of Burlington County. Legends of ghosts and spirits are all that remain of this troubled history. A blue ghost sings in the piano room of the Barclay Haines Homestead on the banks of the beautiful Rancocas. The Burlington County Lyceum of History and Natural Sciences in Mount Holly houses some most unnatural artifacts. Riverside's eerie Keystone Watch Case Tower, just...