A Detective’s Novel sets its murder mystery in a secluded mountain estate on a cold November night. William Goldberg, a successful businessman whose arms company supplied the military during World War II, has died under mysterious circumstances, with family and friends nearby. The case brings celebrated detective Knox to the mansion, accompanied by junior detective Clark, who has been assigned to keep an eye on him. The isolated setting and limited circle of people present frame the investigation as a puzzle of motive and opportunity.
Play is built around the conventions of a mystery visual novel: follow clues, search for evidence, and interrogate suspects to gather information. The game presents the pieces of the case for the player to use in deducing who committed the murder, how it happened, and why. Its cast includes Goldberg’s widow, eldest son, business associate, and long-serving butler, giving the investigation a personal network of possible connections. The stated inspirations include classic detective fiction by Arthur C. Doyle and Agatha Christie, as well as the When They Cry series.
The store lists A Detective’s Novel as single-player, so its format centers on an individual’s progress through the investigation rather than multiplayer sessions. Its adventure and indie classifications further place it among story-led investigations, where the central design question is how the clues and suspects fit together.