Hugh Trevor-Roper was one of the most brilliant historian of his generation. An expert in the history of early modern Britain and Nazi Germany, he was Regius Professor of Modern History at Oxford University, UK and latterly Master of Peterhouse College at the University of Cambridge, UK. He received a life peerage in 1979. He was the author of numerous books, including his famous investigation of Hitler's last days. During World War II, Trevor-Roper served in the Secret Intelligence Service, giving him a remarkable insight into the work of the intelligence services in Britain. A collection of his diaries - The Wartime Journals (2012) - is also available from Bloomsbury. E. D. Harrison is an historian and writer specializing in World War II. He attended Trevor-Roper's lectures while at Oxford University and has taught history at universities in Britain and the US. He has held the Laming Junior Fellowship, the Alistair Horne Visiting Fellowship at Oxford University, UK and an Anthony de Rothschild Fellowship in History of the Churchill Trust. He is the author of The Young Kim Philby: Soviet Spy and British Intelligence Officer (2012).