2. Starfish

Led by Major Harry Markham, the Royal Military Police assist special forces on a dangerous mission. Mary Markham experiences complications with her baby's birth, and Alison Laithwaite introduces Honor to the BP Club.

3. Above Thy Deep and Dreamless Sleep

Captain Joe Martin meets with American journalist Martha Franklin to demand that she hand over incriminating evidence. Christmas celebrations at the Royal Military Police base are cut short by a shocking discovery.

4. The CO's Boy

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.

5. Precious Cargo

The NLF demand a swap. Alison watches over Ed, conflicted about their marriage. Honor confronts Martha. Yusra gets a coded message to Armstrong. Joe disobeys orders.

6. The Bigger Picture

Joe's future in the army hangs in the balance. Armstrong fears for Yusra's safety. Honor is devastated by Joe's secret past. Markham struggles between duty and his own moral compass.