“The Unknown Philby” is a collection of the rarest materials about the legendary Soviet intelligence officer, Englishman Kim Philby, many of which are being published for the first time. Kim Philby himself reveals unique details of operational activities and little-known episodes of his life. His wife Rufina Pukhova-Philby and his student, retired SVR Colonel Mikhail Bogdanov, talk about Philby as a person, a bright and extraordinary personality. These materials will allow the reader to take a fresh look at the greatest intelligence officer of the 20th century and feel the power of the ideas that inspired him and the best people around the world to work together with the Soviet Union.