As the married couple Christopher and Susan Edwards have been living in France for the past 15 years, Christopher desperately calls his stepmother in England to help them financially.
Susan and Chris' pasts and secrets are revealed, following the investigation into the Mansfield double murder.
As new information is revealed regarding the relationship between Chris and Susan with her parents, Lancing and Wilkie find a new lead.
Susan and Christopher are put on trial, and their love is put to the test.