Iain Sinclair has been documenting the peculiar magic of the river-city that absorbs and obsesses him for most of his adult life. In The Last London, he strikes out on a series of solitary walks and collaborative expeditions to make a final reckoning with a capital stretched beyond recognition. Here is a mesmerising record of secret scholars and whispering ghosts. Of disturbing encounters. Night hospitals. Pits that become cameras. Mole Man labyrinths. And privileged swimming pools, up in clouds, patrolled by surveillance helicopters. Where now are the myths, the ultimate fictions of a many times revised city?