1861, Victorian England. When Matthew and Harriet Rowsley are invited to a party at Clunston Park by Matthew's cousin, Colonel Barrington Rowsley, Harriet is nervous - surely the aristocratic guests will snub her? Her fears are realised on their first evening when the only person who deigns to speak to her is the spiteful Grafin Weiser and confirmed when she commits a faux pas at the cricket match the following day. Grafin Weiser is then found murdered and the finger is quickly pointed at Clara, an eleven-year-old maid, as the culprit. Convinced that she cannot be guilty, Harriet and Matthew agree to investigate. The aristocratic facade begins to crumble under their scrutiny, and they start to unlock the secrets of Clunston Park. Harriet and Matthew must uncover the truth, before they find themselves in deadly danger . . .