I have been following The Rest is Classified, about 'the secretive world of spies, espionage, and covert operations. Hosted by former CIA analyst turned spy novelist, David McCloskey, and veteran security correspondent, Gordon Corera.' Excellent stuff. There's another top notch BBC produced one (a dramatised podcast) on the CIA, Central Intelligence, has ED Harris narrating the Allen Dulles character. Good to combine both, one of the BBC's episodes gives account of the bizarre attempts to engineer a coup by a coalition of 'The Allies' in Albania ousting Hoxha in post WW2, all attempts failed miserably, Kim Philby's fingerprints were all over the betrayal of the plans.