Mma Remotswe and her friends and family get a chance to test the waters as they are all thrown in opportunities for change. Mma Makutsi is the one facing the biggest amount of change. As she starts to finalize preparations for getting married, tensions start to bubble up between herself and her boss. Some of it comes down to the fact that Grace wants to have more of an opportunity to grow into her position, but a lot of it is really do to the fact that her impending marriage means she really doesn't have to work. As a result, the two end up in an argument and Mma Makutsi quits. She is not sure why she needs to put up with Mr. J.L.B. Matekoni's rude apprentices, the clients who look down upon her, or the strict schedule she needs to follow.

One of the apprentices, Charlie, is also up for a change. He has decided that being a mechanic might not be his ultimate goal. Considering his work habits, this might not be a total surprise to those around him. As an alternative, he decides he might want to start a taxi service. Because of limited funds, he decides to turn to his mentor, Mr. J.L.B. Matekoni for some help. The ever helpful mechanic is always willing to help.

With a shortage in the office and the garage, it is all hands on deck. Mr. Polopetsi, assistant mechanic and receptionist, rises to the occasion happily. Even Mr. J.L.B. Matekoni finds himself being assigned to work with his wife' caseload. He ends up taking on a case in which a woman believes her successful husband is having an affair. He quickly learns that such investigations can lead to many surprises.

Mma Ramotswe does not allow herself to be overcome by the challenges in her office. She knows that her clients depend on her, and this was never more true. She has been hired by a local hospital to investigate a series of mysterious deaths. All of the patients involved on Fridays at the same time while inhabiting the same hospital bed. The hope is that she will be able to identify the cause before someone else falls to the mysterious curse.

Reading these books is always like visiting old friends. Everyone in the stories are just trying to make their way in the everday world they inhabit. The cases they are involved in are interesting, and Mma Ramotswe and her team seem willing and able to come to a resolution that is more about justice and truth than anything else. They are not superhero detectives, but everymen and -women who make mistakes even as they have the best of intentions.