2006: The investigation into Oliver's disappearance continues. Tony's past comes back to haunt him. Ian Garrett continues to offer support and the friendship between him and Tony deepens. An undercover police officer in Paris comes forward with possible information about Oliver Hughes. Present day: Tony and Julien are relieved that the case has now officially been reopened. Emily returns to Chalons Du Bois and finally begins to face the demons from her past. Progress into the case is initially slow but a shocking new lead emerges.
Elenco: David Morrissey , Keeley Hawes , Abigail Hardingham , Tchéky Karyo , Anastasia Hille , Roger Allam , Laura Fraser , Lia Williams .