The final book in the Kurt Wallander series was published 2009.
The author dying of cancer while he wrote it, I believe.
For me the story was mostly a look at aging and dying. The meaning of life.
The plot was inspired by the submarine incursions into Swedish territorial waters between 1982 and 1983, which Mankell considered the worst scandal in Swedish political history.
Though slower and even more philosophical than the rest, I still enjoyed the book — sad that it was the end for Wallander and the end for Mankell.
The only story I haven’t heard yet is a novella — An Event in Autumn — not available in audio on my services.