19:4515 Minute DramaWriting the Century: The SecretEpisode 4: BetrayalBBC Radio 4 Duration: 15 minutes Thu 14th Apr 2016, 19:45 on BBC Radio 4 LWBetrayal close to home brings Muriel's mother's secret out into the open. Show more ContributorsMuriel:Scarlett BrookesMother:Jeany SparkPhilip:Will HowardRalph:Tom ForristerJinks:Joe SimsAdaptor:Tina PeplerAdaptor:Sara DaviesDirector:Gemma JenkinsProducer:Gemma JenkinsGenresDramaBrand15 Minute DramaSeries15 Minute Drama: Writing the Century: The Secret Source: BBC Online