Synopsis

The season four finale of *Ghost Hunters* sees the TAPS team investigating Portsmouth Harbor Lighthouse and Fort Constitution in New Castle, New Hampshire. The 48-foot cast-iron tower was built in 1771, and the grounds encompass roughly two acres, including Fort Constitution and the Keeper's Quarters. Following years of reported late-night activity from the Coast Guard and other observers, members of the Friends of the Portsmouth Lighthouse seek to determine if the lighthouse and its surrounding