Tears of the Giraffe — Alexander McCall Smith

Precious Ramotswe is the eminently sensible and cunning proprietor of the only ladies' detective agency in Botswana. In Tears of the Giraffe she tracks a wayward wife, uncovers an unscrupulous maid, and searches for an American man who disappeared into the plains many years ago. In the midst of resolving uncertainties, pondering her impending marriage to a good, kind man, Mr. J. L. B. Matekoni, and the promotion of her talented secretary (a graduate of the Botswana Secretarial College, with a mark of 97 per cent), she also finds her family suddenly and unexpectedly increased by two.