The RMP begin their desperate search. Tilbrook takes Markham to visit an important prisoner. Alison can't go on with her pregnancy. Alison confides in Honor about her affair. Ed receives intelligence that leads him into danger.
Jessie Buckley
Honor Martin
Stephen Campbell Moore
Lieutenant Ed Laithwaite
Amanda Drew
Mary Markham
Ben Miles
Major Harry Markham
Jeremy Neumark Jones
Captain Joe Martin
Jessica Raine
Alison Laithwaite
Ouidad Elma
Yusra Saeed
Chris Reilly
Sergeant Alex Baxter
Kevin Sutton
Corporal Israel Orchover
Richard Dillane
Harvey Tilbrook
