"Precious Ramotswe is back and, as usual, her plate is full! She's called in to tackle a mysterious disciplinary problem at her adopted daughter's school...Her infinitely trustworthy assistant, Grace Makutsi, is having trouble adjusting to wedded bliss, a problem to test even the formidable talents of Mma Ramotswe...And the estimable Clovis Andersen, author of The Principles of Private Investigation--the No. 1 Ladies' prized manual--has arrived, right...

Business is slow at the No. 1 Ladies' Detective Agency, so slow in fact that for the first time in her estimable career Precious Ramotswe has reluctantly agreed to take a holiday. The promise of a week of uninterrupted peace is short-lived, however, when she meets a young boy named Samuel, a troublemaker who is himself in some trouble. Once she learns more about Samuel's sad story, Mma Ramotswe feels compelled to step in and help him find his way...

A kindhearted brother and sister have taken in a woman known only as "Mrs."-- a woman with no memory of her name or of how she came to Botswana. And so it's up to Precious Ramotswe and her new co-director, Grace Makutsi, to discover the woman's identity.