Blue shoes and happiness: A cobra has been found in Precious Ramotswe's office. Then a nurse from a local medical clinic reveals to Mma Ramotswe that faulty blood-pressure readings are being recorded there. And it looks as though Aunty Emang, the advice columnist in the local newspaper, may not be what she seems. The good husband of Zebra Drive: Detective Precious Ramotswe has her hands full with her assistant's resignation, as well as a set of cases involving unexplained deaths at a nearby hospital, an allegedly cheating husband, and thievery at a local printing company.