15:45WE Johns - Biggles Flies NorthEpisode 4: Some Grim EncountersBBC Radio 4 Extra Duration: 15 minutes Thu 21st Apr 2011, 15:45 on BBC Radio 4 ExtraThe crackle of vicious machine-gun fire from another plane forces the Jupiter to take action. Read by Michael Palin. From August 1981.GenresDramaAction & AdventureSeriesWE Johns - Biggles Flies North Source: BBC Online