An American woman named Julia approaches Mma Ramotswe for help. Her beloved late grandfather was Botswanan; years after his passing and during a rough patch in her own life, Julia has come to visit the land he had spoken of so often, and to find her relatives. All she can remember are a few first names and some descriptions of his village-- not a lot to go on, but all she has. Meanwhile, Charlie is leading his own investigation: going undercover into the Cool Singles Evening Club, where married men are encouraged to pretend to be single and meet women under false pretenses. -- adapted from jacket