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2/4 In singles bars, Dr Heaven continues his search for love.
A trip to France with her husband on a luxury motor yacht turns Sam's life upside down.
1/4 Can Dr Heaven locate Agent Frank, lost somewhere in an experimental company town?
Nat Hocken and his family are disturbed during the night by the sounds of birds.
8/10 With Andrei arrested, will anyone help pregnant Anna with her inquiries?
BBC Radio 4
10/10 Volkov gives Andrei a way out of execution, while Anna waits to give birth in hiding.
9/10 Andrei comes face to face with Gorya's father Volkov, and learns what the powerful can do.
7/10 Dr Brodskaya has been arrested. Now, a car door slams beneath Andrei and Anna's flat.
6/10 Anna and Andrei know they must protect Kolya. Then a call confirms their worst fears.
5/10 Anna and Andrei are warned to get out of Leningrad, but is it already too late?