In December 1909 the Very Rev Joshia Martins expires in a dish of mutton and onions leaving his family on the brink of destitution. Abandoned by her noble grandfather, Joshia's daughter, the eighteen year old Euphemia, takes it on herself to provide for her mother and little brother by entering service. She's young, fit, intelligent, a little naive and assumes the life of a maid won't be too demanding. However, on her first day at the unhappy home of Lord Stapleford she discovers a murdered body.