Maya is contacted by a witness whose story casts doubt on everything she thought she knew about the Antwi case. Nick confronts a ghost from his past and makes a fateful decision to protect his family.

Cast: Sophie Okonedo, Sope Dirisu, Thomas Aldridge, Glyn Grimstead, Phil Deguara, Sam Stockman, Derek Riddell, Leanne Best, Mark Bonnar, Alistair Petrie, Cecilia Noble, Angel Coulby, Adrian Lester, Thomas Dominique, David Schofield