Hidden AgendasEpisode 2: The InvitationBBC Radio 4 Extra Duration: 15 minutesFirst broadcast: Fri 4th May 2012, 15:45 on BBC Radio 4 FMLatest broadcast: Wed 6th Jul 2016, 21:00 on BBC Radio 4 ExtraBy Neil Hartman and Tony Haynes. Attracted to Karlssen's brilliance, Chapman discovers he is on the receiving end of his dark ambition. Show more ContributorsReader:Iestyn JonesWriter:Neil HartmanWriter:Tony HaynesProducer:Nigel LewisGenresDramaFormatsAudiobooksSeriesHidden Agendas Source: BBC Online