Cincinnati chills are on the menu, as two ghost tour guides serve up the most terrifying tales from this Ohio River city's haunted history.   A ghostly captain who forever guards her steamboat, an elusive lady in green who roams Carew Tower, spectral lovers who reunite in museum halls, these are among the souls who walk Cincinnati's forgotten paths. Take a chilling tour with Teri Casper and Dan Smith, owners of Cincinnati Tours, Inc., as they recount the infamous murder of Imogene Remus by her bootlegger husband and recall the tale of a young World War II soldier who is still searching for a way home from Union Terminal. Wander among the lonely mausoleums of Spring Grove Cemetery and listen for strange echoes in Music Hall to meet the otherworldly residents of the Queen City.   Includes photos!