Book 90 that I read was Morality for Beautiful Girls by Alexander McCall Smith. This is volume 3 of the No. 1 Ladies’ Detective Agency series. In this book Mma Ramotswe finds Mr. J.L.B. Matekoni facing depression and enlists the help of Mma Potokwane of the Orphan Farm in getting him to the doctor and in helping him to take the medication the doctor gives him and getting him the rest he needs.
Since Mr. J.L.B. Matekoni cannot work at Tlokweng Road Speedy Motors during his depression, Mma Ramotswe makes Mma Matkusi Acting Manager of the shop and she is put in charge of making sure the apprentices are doing their work and the cars are being repaired properly. Mma Matkusi does a fine job. She is quite strict with the apprentices and also does he job as Office Manager of Tlokweng Road Speedy Motors and secretary of the No. 1 Ladies’ Detective Agency. She is a very busy woman.
Mma Ramotswe takes a job from a Government Man who believes his sister-in-law is trying to poison his younger brother. This job means that Mma Ramotswe must spend some time on the family farm outside of town and she leaves Mma Matkusi in charge. While Mma Ramotswe is away, the man who is incharge of the Miss Beauty and Integrity contest comes to the Agency and asks Mma Matkusi to investigate the 4 girls who are competing for the title to find which girl is the most worthy of the title. He has had too many embarrassing incidents where the winners were unworthy, where they were good-time girls, or worse. Mma Matkusi takes the case, even though she has much to do with the Tlokweng Road Speedy Motors, but she does find the worthy girl for him in the four days and earn a large cheque.
Mma Ramotswe investigates things at the family farm of the Government Man and she and all the family are poisoned by the noon meal after she arrives. She discovers that the cook is poisoning the food because he does not want to be a cook. So she does not have to stay long. She returns to Gaborone and tells the Government Man that he is rude and arrogant (which he is) and explains the situation to him and also tells him that he needs to treat his family better. The Government Man is changed.
Mr. J.L.B. Matekoni is gradually getting better at the Orphan Farm and is even helping with a wild boy who has no language and seems to have been raised by animals. Mma Ramotswe feels there is hope. Ninety down, 35 to go.