This is the first investigation into the claim that Roger Hollis was the fifth man in "Spycatcher". Written like a psychological thriller, it puts forward evidence to show who the real mole inside M15 was and reveals the importance of the Oxford connection to treachery within the British security services. The book also reveals secrets about a member of the Royal Family and the espionage connections of one of Britain's most powerful and richest men. Richard Deacon is the pseudonym of Donald McCormick, a former foreign correspondent of and later foreign manager of the "Sunday Times". He was the first writer to expose Anthony Blunt in his book "The British Connection" , which was withdrawn from publication after four days following an injunction.