Evelyn Hardcastle will die tonight — and again tomorrow, and the day after that, until someone stops it. Aiden Bishop knows only that he is trapped at Blackheath, a decaying country estate hosting a lavish party, reliving the same day inside a different guest's body each time it resets. To escape the loop, he must identify Evelyn's killer before the day is done; if he fails, his memory is wiped and the day begins again, in a new host, with the clock reset to morning.
Each host gives Aiden new memories, new relationships, and new physical constraints, and the murder itself keeps revealing new angles as he pieces together fragments across bodies who each glimpse only part of the truth. He is not the only guest trying to solve it, and not everyone at Blackheath wants the mystery to be solved at all.
Stuart Turton's genre-bending debut fuses a golden-age country-house murder mystery with the puzzle-box structure of a time loop, rewarding readers who track clues across shifting, unreliable vantage points toward a solution that recontextualizes everything that came before.