Haig plays Eve’s bemusedly gruff and worn-out colleague Bill, who finds himself unwillingly drawn in by Eve’s hunches, while Shaw plays the determined and no-nonsense Carolyn, the head of MI6’s Russia desk.
Speaking of Eve’s work, that’s where we meet Bill and Carolyn, as respectively portrayed by the always-excellent David Haig and the Harry Potter franchise’s Fiona Shaw.
It’s a small ding, though, since it’s arguably necessary in some cases.
It’s Carolyn who takes Eve’s murder theories to heart and heads up a secret unit dedicated to tracking down the supposed killer tying it all together, though she may know more than she’s letting on at any given moment.