Piranesi lives in the House. There is nothing beyond or outside. He has explored with scientific rigour, as far as he can go, diligently mapping his progress. His findings suggest the House is infinite, its upper halls thick with drifting clouds, its lower levels submerged beneath silent waters. Each hall has its own collection of statues, which Piranesi catalogues with earnest devotion. He is entirely alone, save for weekly meetings with the elusive Other, the only other living man in the House. Piranesi likes to believe that they are colleagues, working together for the greater good, but he knows deep in his heart that he and the Other have different ambitions. The Other dreams of discovering some great and terrible knowledge hidden within the House, while Piranesi cares only for the well-being of the House itself, in all its majesty. Susannah Clarke’s long-awaited new novel transports us to an extraordinary world and poses a question: How can we understand and rationalise our world when we can’t escape it? Dream, reality and perception tremble on the brink in one of the most original novels I’ve ever read.