Episode 3

S2, E3: It's Danny and Barbara's anniversary dinner, but it's strained between them - we find out that the previous night, she'd asked him for a divorce. Flashback to Hong Kong, 2014. Barbara is an MI6 agent. On a mission to find a mole, her path crosses with ex-boyfriend, Nicky Chan. Barbara works with Nicky to find the mole but is devastated when the HK mission is disbanded and her boss Alex pulls her out. Disillusioned, she gives up her job, encourages Danny to take the promotion as Deputy Head of Operations, and accepts a 9-5 role at GCHQ in the linguistics department. Then in 2022, we see Barbara cross paths with old flame Nicky once again, which leads her to make an impulsive decision she'll forever regret.