In the show Kate plays Georgia Wells, a widow (as the name implies) who's still mourning the death of her husband who perished in an airplane explosion that occurred over the Congo. She's living a miserable, hermit-like existence in Wales until she sees what she believes to be her husband's orange baseball cap on the news.

Grasping at any hope of her husband still being alive, she decides to travel to the Congo to find out if her man's still alive. You'd probably think that it'd be naive for someone who's an office worker or librarian to up and just head out on a covert mission to save her husband's life, and you'd be right. But the thing about Georgia is she just isn't your everyday Wales hermit who works a 9 to 5: she's ex military.

Now she's thrust into a world of political espionage and over the course of the eight-part series, Georgia starts putting together different clues and telltale signs to hopefully get to the bottom of what happened to her husband. Did he explode in the plane? Who was behind the attack that killed (?) her dude, and how has she not aged in 20 years? OK, maybe not that last one but if she has any pointers I'll gladly take them.