the October 1964 General Election. During the 1950s and 1960s, a large number of MI5 operations failed in circumstances that suggested the Soviets had been tipped off. Although many such failures were subsequently blamed on the actions of such self-confessed or defected agents as Philby, Guy Burgess and Anthony Blunt, a number of failures occurred after all three had lost their access to secret information. Some in MI5 concluded the Soviets had an agent in a very senior position within the organisation. Peter Wright, Arthur S. Martin, Jane Sissmore and others became convinced that either Hollis or his deputy, Graham Mitchell, could be the only ones responsible, eventually confiding their suspicions to Dick White, director general of MI6. White instructed Martin to inform Hollis that Mitchell was a suspect, and Hollis instructed Martin (after due consideration) to keep Mitchell under surveillance. Author Nigel West implies that this was a deliberate ploy to keep tabs on both Mitchell and Hollis. Martin eventually became so disgruntled and outspoken about Hollis's attitude toward the investigation that Hollis suspended Martin for a fortnight, and the case was turned over to Wright. Much of the investigation was centred around interviews with Anthony Blunt at that time, and Wright had amassed a sizable amount of taped evidence from Blunt when Martin returned from suspension. After 1964, Blunt gradually confessed his double-agent role in exchange for immunity from prosecution. Eventually the operation wound down. By then, some time after Hollis had retired, suspicion had shifted from Mitchell to Hollis. New Director General Martin Furnival Jones refused to sanction an investigation into Hollis. Mole Hunt (Chapter 3, page 45) noted that the investigative team known as FLUENCY had been disbanded before any conclusions had been reached. In 1984, investigative journalist Chapman Pincher published Too Secret Too Long, a book which examined the early life of Hollis and his MI5 career drawing upon new sources and upon many interviews with retired intelligence personnel. Pincher published a revised edition in 2009. Pincher also accused Hollis of being a Soviet agent, although separate from the Cambridge Five spy ring. Pincher claims Hollis was recruited by Richard Sorge in China in the early 1930s to spy for the GRU. Evidence has been advanced to support these assertions by Pincher in his book, Treachery: Betrayals, Blunders, and Cover-ups: Six Decades of Espionage Against America and Great Britain, which is devoted to positing that