Reverend Joshia Martins expires in a dish of mutton and onions leaving his family on the brink of destitution. Joshia's daughter, Euphemia, takes it on herself to provide for her mother and brother by entering service. However, on her first day at the home of Lord Stapleford she discovers a murdered body. Euphemia's innate sense of justice has her prying where no servants should look, uncovering dark secrets of the Stapleford family. Accused of murder and in fear for her life, all Euphemia has to defend herself is her quick wits, sense of humour and the ultimate weapon of all virtuous young women, her scream.