In the early 1960s, for instance, Venona documents helped convince the CIA's own Venona head man and mole-hunter
, James Jesus Angleton, that former governor of New York and ambassador to Russia Averell Harriman was a Soviet agent.
The title comes from a sexual pun in Hamlet that Rosenbaum interprets more broadly to suggest that the history of any period is often hidden in the seemingly trivial or obscure Rosenbaum loves secrets: secret meanings in literary texts; secrets about the ultimate loyalties of double agents (his Harper's profile of CIA mole-hunter
James Angleton isn't included, alas, but a marvelous New York Times Magazine piece about Kim Philby's private papers is); secret societies (probably Rosenbaum's best-known magazine article is an Esquire piece about Yale's Skull & Bones); and mysteries about murders and suicides, which are always shrouded in secrecy.
That is when the Estonian mole-hunters
began to reconstruct the movements of the supposed Spaniard and followed the thread back to the agent inside NATO.