"The Deptford Trilogy" is a series of three interconnected novels by Canadian author Robertson Davies. The trilogy includes "Fifth Business," "The Manticore," and "World of Wonders," published between 1970 and 1975. The stories explore themes of identity, myth, and the impact of the past on the present, set against the backdrop of the fictional town of Deptford in Ontario. Each book follows different characters, primarily focusing on Dunstan Ramsay, David Staunton, and Simon Darcourt. The narrative weaves together elements of psychology, spirituality, and the arts, showcasing Davies' interest in the complexities of human nature and the interconnectedness of lives and stories.