Describes the life of Ida Lewis, the lighthouse keeper of Lime Rock, whose rescues of eighteen people made her a celebrity across the country.

"Could the old lighthouse that Jack's aunt bought to turn into a guesthouse actually be haunted? Mysterious figures in the windows...strange noises...flickering lights. Is this really the work of ghosts? When the Jones family is invited to stay at the old Point Danger Lighthouse, Jack, his sister Emma and best friend Albert are excited to explore the lighthouse, check out the views, and spend time playing by the sea. But when they hear from the lighthouse...

On the picturesque bluffs of Martha's Vineyard, disaster looms. The historic Gay Head Lighthouse, weighing more than 400 tons and soaring 175 feet above the sea, is precipitously close to toppling into the ocean. As a team of engineers attempts to move the iconic red brick structure inland to safety, discover the geology they encounter, the archaeology they discover, and technology they employ in this lighthouse rescue.