Culture File's summer reading club concludes with Tlön, Uqbar, Orbis Tertius, Jorge Luis Borges' story of a possibly lost, possibly never-existing civilisation, hunted down by a literary flatfoot called Borges and his BFF, Adolfo Bioy Casares. Writer and critic Orit Gat helps Luke Clancy and Colm Tóibín assess the damage to the fabric of reality, while Ariel Hernandez (guitar) and Dermot Dunne (accordion) play some live milongas.