Guest Stars Karima McAdams as Miriam Attar Anna Berentzen as Young Emma Brooke Haynes as Emma Age 6 James Eeles as Mike Christine Bottomley as Jenna Brooks Cathy Murphy as Beth Simms Colin Stinton as Jack Kretchmer Jack Hollington as Jason Peterson Ben Cartwright as Phil Simms Anna Shaffer as Leila Catherine Steadman as Karen Buxton James Thorne as Derek Peterson Brendan Patricks as DCI Nicholas Staines Elizabeth Conboy as Supervisor Priyanga Burford as Zeinab Akbari Carol Plant as Female Prison Officer Sam Crane as Luke Sammy Winward as Siobhan Murphy Suzette Llewellyn as Delilah Hamlin Richard Simons as SO15 Tech Simon Hepworth as Oliver Jones Lara Cazalet as Janice Long
