Wallander (Kenneth Branagh)'s funeral reading is from this collection: The Great Enigma (Swedish: Den stora gåtan), a 2004 book of poetry by the Swedish writer Tomas Tranströmer.
In the intro, Kenneth Branagh's voiceover recites the poem 'The Half-Finished Heaven' by Nobel Prize winner Tomas Tranströmer but skipping the ante-penultimate verse "The endless ground under us".