On August 28, 1922, the martyred Irish patriot Michael Collins was buried. Businesses across Dublin closed as thousands came out to pay their respects. On the same day, Michael Lyons, a cooper from the Guinness factory, drowned in Dublin's Royal Canal. This peculiar confluence is Mark Anthony Jarman's starting point for a meditation on the intertwined history of a nation and his family. Jarman's pursuit of the circumstances of his grandfather's drowning...