Dramatisation of the classic Victorian thriller by Mary Elizabeth Braddon. Robert Audley gets closer to the truth in his quest to uncover Lady Audley's secret. Everything begins to fall into place as he questions Lucy Audley's first employers and, at last, he uncovers a vital clue. Mary Braddon ...... Hattie Morahan Robert Audley ...... Alex Wyndham Mr Dawson ...... Paul Rider Mrs Vincent ...... Charlotte West-Oram Tonks ...... Deborah McAndrew Phoebe Marks ...... Lizzy Watts Luke Marks ...... Benjamin Askew Directed by Julie Beckett and Fiona Kelcher.