PerelandraEpisode 18BBC Radio 7 Duration: 30 minutesFirst broadcast: Fri 21st Mar 2008, 18:30 on BBC Radio 7Latest broadcast: Sat 22nd Mar 2008, 00:30 on BBC Radio 7Ransom says farewell to Perelandra and returns to Earth. Episode 18 of 18.GenresDramaSciFi & FantasySeriesPerelandra Source: BBC Online