When the Origins of Species was published on 24 November 1859, its author, Charles Darwin, was near the end of a nine-week stay in the remote Yorkshire village of Ilkley. He had come for the 'water cure' - a regime of cold baths and wet sheets - and for relaxation. But he used his time in Ilkley to shore up support, through extensive correspondence, for the extraordinary theory that the Origin would put before the world: evolution by natural selection. In Darwin in Ilkley, Mike Dixon and Gregory Radick bring to life Victorian Ilkley and the dramas of body and mind that marked Darwin's visit.