14:15This Sceptred IsleEpisode 164: The Suicide of CastlereaghBBC Radio 4 Extra Duration: 15 minutes Mon 25th Jun 2012, 14:15 on BBC Radio 4 ExtraThe death of a foreign minister, penal reform and the birth of the police force. Bite-sized history narrated by Anna Massey.GenresDramaHistoricalFactualHistorySeriesThis Sceptred Isle Source: BBC Online