Harry has a second chance at saving Kasia from Warsaw. In Manchester, could Lois be set for happiness at last?
(dramatic orchestral music) - [Narrator] On "Masterpiece."
- [Officer] This operation carries the highest risk.
- [Nancy] Hitler's attention is focused
toward Great Britain. - Is Vernon back?
- Godstick, we don't know. - He got shot down?
- I'm the one in the cage here.
- I will find a way.
- [Kasia] I have done bad things.
- If you're not going to help me,
I'm not playing games with you.
- [Robina] Your baby's been born.
- Now you're displaying this sudden concern!
- You have a choice!
- [Narrator] "World on Fire," the season finale.