Merlyn's Isle — Elisabeth Kidd

Claire Bradley travels to Cornwall searching for answers about her sister Elaine's death -- and her even more mysterious life.  Elaine's brother-in-law, Gareth Trent, owner of the otherworldly home on the ocean called Merlyn's Isle, insists there is no mystery, but invites Claire to stay to collect Elaine's things, hoping to satisfy her that Elaine and her husband really did die in a boating accident. Gothic novella by Elisabeth Kidd