"Matthew Swift: The Midnight Mayor" is a fantasy novel by Kate Griffin. It follows the story of Matthew Swift, a young man who becomes the protector of London after a near-fatal encounter with magical forces. As the Midnight Mayor, he navigates the city's hidden magical underworld, dealing with various supernatural beings and threats. The novel blends urban fantasy with elements of mystery and adventure. Matthew must balance his responsibilities as the Midnight Mayor while uncovering secrets that could endanger both the magical and human realms. The story explores themes of power, identity, and the complexities of urban life.