One of the great country house detective novels, entertaining and ingenious

Marion Sharpe and her mother are quiet and ordinary villagers, enjoying a peaceful life in their country home, the Franchise. Everything changes when a local schoolgirl accuses them of kidnap and abuse, describing the attic room of the house as her prison. Scotland Yard inspector Alan Grant is called to solve the mystery of the Franchise, but will he fall right in the middle of nightmarish affair that will change a town, and its locals' lives, forever?