Kristen Perrin’s novel operates within the tradition of the cozy mystery, a subgenre of the mystery that gained prominence during the Golden Age of Detective Fiction, generally acknowledged to be the 1920s and 1930s. Cozy mysteries feature an amateur sleuth in a small, close-knit community, a puzzle-focused plot that minimizes on-page violence, and a cast of eccentric local suspects. G. K. Chesterton offers an early example of the cozy mystery with his Father Brown stories, like The Innocence of Father Brown (1911), but the most famous early example of this subgenre is Agatha Christie’s amateur sleuth Miss Marple, who appears in 12 novels and numerous short stories. Miss Marple resides in the small English village of St. Mary Mead and uses her unassuming exterior to solve murders like that of the first novel, Murder at the Vicarage (1930). Other important classic detectives of the cozy mystery genre include Dorothy Sayers’s Lord Peter Wimsey (The Nine Tailors, Gaudy Night) and, more recently, M. C. Beaton’s Hamish Macbeth (Death of a Gossip).

In How to Seal Your Own Fate, protagonist Annie Adams fits the amateur sleuth archetype perfectly; she is a writer who, after inheriting an estate, finds herself investigating cold cases using her great-aunt’s meticulously collected files on town secrets. The quaint English village of Castle Knoll provides the conventional insulated setting where everyone knows one another, and dark secrets lie beneath a tranquil surface. The novel updates the classic cozy formula by incorporating a dual-timeline narrative, a popular technique in contemporary mystery fiction. This structure allows historical crimes to intersect with present-day events, a method also used effectively in Richard Osman’s bestselling Thursday Murder Club series, which similarly features amateur sleuths solving decades-old mysteries. This narrative approach allows the novel to honor the puzzle-box plotting of traditional cozies while exploring deeper themes of memory and generational trauma, creating a mystery that is both intellectually engaging and emotionally resonant.