5/6 The Roman detective is worried when the prisoners finally meet legendary priestess Veleda.
BBC Radio 4 Extra
6/10 Robert Audley gets closer to the truth in his quest to uncover Lady Audley's secret.
6/6 The Roman sleuth has a fateful encounter with a missing legate and a giant Celtic bull.
7/10 Robert determines to find a link between George Talboys's dead wife and his aunt.