Worricker (Bill Nighy) is on the run, now in Germany with ex-spy, ex-love Margot (Helena Bonham Carter) by his side. They’re stirring the embers of their faded romance and recalling all the quirks and peccadilloes they once found so endearing. (He doesn’t wash the lettuce properly! How adorable is that?) They live out of suitcases, yet seem to wind up nattily attired in some snazzy digs. It’s all a lark, really.
Still, Margot longs to return to England. And Worricker’s daughter (Felicity Jones) is due to give birth any moment, which gives him a reason to pine for home as well. This poses a dilemma. Going home would place them in the way of Prime Minister Alec Beasley (Ralph Fiennes), whom Worricker has embarrassed with accusations of financial and ethical impropriety.
Meanwhile, Worricker’s old colleague in the spy game Jill Tankard (Judy Davis) is performing all sorts of machinations that confirm the primary thesis of the Worricker series: The intelligence services run everything.