Precious Ramotswe and Grace Makutsi, Gaborone's No. 1 Lady Detectives, do not always agree on important issues - one being the complex male psyche. Mma Ramotswe is reminded of this when ­her husband, J. L. B. Matekoni, is offered a daunting business opportunity, one which, if it fails, threatens their existing livelihood, including the detective agency. Somehow, Precious must guide her husband to the right decision, while being mindful of how much he wants The Joy and Light Bus Company to succeed.Meanwhile, there are other problems to solve. A wealthy client's elderly father has changed his will, making his devoted live-in nurse a significant beneficiary, and the ladies are tasked with uncovering the woman as a fraud. And then there is the disturbing rumoured maltreatment of children living and working on a local farm, which a concerned Mma Ramotswe is intent on investigating. "Full of delight" Sunday Herald "Hugely enjoyable" Sunday Times