14:30AS Byatt - The Frederica QuartetBabel Tower, Part 7/8BBC Radio 4 Extra Duration: 15 minutes Tue 28th Jun 2016, 14:30 on BBC Radio 4 ExtraFrederica discovers that her new lover, John, has an unhinged brother and Paul makes a dramatic statement. Stars Tim Treloar.GenresDramaClassic & PeriodSeriesAS Byatt - The Frederica Quartet Source: BBC Online