Cracow, 1893. Thirty-eight-year-old Zofia Turbotynska has assured her husband's rise through the ranks to university professor and is now looking for something to fill her long days at home. To stave off the boredom and improve her social standing, she decides to organise a charity raffle.
To recruit the requisite patronage of elderly aristocratic ladies, she visits Helcel House, a retirement home run by nuns. When two of the residents are found dead, Zofia discovers by chance that her real talents lie in solving crimes. The examining magistrate's refusal to take seriously her insistence that foul play is involved spurs her on to start her own investigation, recruiting her quick-witted servant Franciszka as her assistant.
With her husband blissfully unaware of her secret activities, Zofia ruthlessly follows the clues and gradually closes in on the truth. Drawing on Agatha Christie and filled with period character and charm, Mrs Mohr Goes Missing vividly recreates life in turn-of-the-century Poland, confronting a range of issues from class prejudice to women's rights, and proving that everyone is capable of finding their passion in life, however unlikely it may seem.