This is book 6 in the Lin Coffin series. Although the main mystery is solved in each story, the books should be read in order for the most enjoyment as story threads run from book to book. East End Lighthouse on Nantucket island is undergoing renovations and Lin Coffin's boyfriend has been hired to work on the project. When Jeff and Lin bike out to the bluff, Lin sees a ghost inside the lighthouse and he fills her heart with grief and loneliness...