"The Keep" is a novel by American author Jennifer Egan, published in 2006. The story follows Danny, an aging New York hipster facing hard times. He receives an invitation from his cousin Howard to join a project renovating an old castle in Eastern Europe. This invitation brings back memories of a traumatic childhood incident between them. As they work on restoring the castle, Danny encounters strange events that lead him to question Howard's intentions and revisit their shared past. The novel blends elements of gothic romance and ghost stories, offering insights into communication and loneliness in contemporary life.