Admittedly I never read these until they were televised recently. Mankell is brilliant. His books are easy to read but intelligent and fast moving. This story begins with a mysterious Midsummer’s Eve gathering, those attending wearing costumes from centuries before. It is extremely secretive but someone is watching. Simultaneously Wallander is returning from his summer holiday but he is exhausted and knows his health is compromised. The fatigue worsens when more questions arise than answers are found and he has to delve into the life of one of his colleagues. He knows he is racing against the clock to find the perpetrator and get his life under control included eating well and exercising. Easier said than done.