When Millie first meets Elishka, she identifies her accent as Baltic. But then she mentions Hungary, Czechoslovakia and Serbia as possible countries she is from. These are all in the Balkans.
The premise behind Lucy's character and her function in the circle is that she's a savant with a remarkable photographic memory. In previous episodes she's shown recalling minute details such as train cancellations from weeks ago and exact text from documents she's read.
In this episode, she pulls out a notebook to get details of a few arrests she's read from files only earlier that day, totally contradicting her skill of total recall.
In this episode, she pulls out a notebook to get details of a few arrests she's read from files only earlier that day, totally contradicting her skill of total recall.