A hub of research and technology, North Carolina's tri-city region is built on the bones of a haunted past that's brought to life in twisted tales.   The Research Triangle is a place of renowned progress and technology, but its three cities also boast a long and rich heritage, complete with many important historic sites where the past lingers a little too closely. From the otherworldly music at the Carolina Inn to the sound of laughter echoing in the old morgue at Watts Hospital to the image of men swinging from ropes in Hannah's Creek Swamp, the ghosts of the Triangle continue to make their presence known throughout the region. Join local brothers Richard and William Jackson as they trace the history behind these spine-tingling tales.   Includes photos!