huge success of Sinclairs The Secret Life of Bletchley Park  a quarter of a million copies sold to date  has been symptomatic of a similarly dramatic increase in visitors to Bletchley Park itself, the Victorian mansion in Buckinghamshire now open as an engrossing museum of wartime codebreaking. Aurum is publishing the first comprehensive illustrated history of this remarkable place, from its prewar heyday as a country estate under the Liberal MP Sir Herbert Leon, through its wartime requisition with the addition of the famous huts within the grounds, from  the place where modern computing was invented and the German Enigma code was cracked, to its post-war dereliction and then rescue towards the end of the twentieth century as a museum whose visitor numbers have more than doubled in the last five years. Featuring over 200 photographs, some previously unseen, and text by Sinclair McKay, this will be an essential purchase for everyone interested in the place where codebreaking helped to