Eve and Villanelle, having left each other in total turmoil on Tower Bridge at the end of season 3, are thrown into season 4 trying to figure out what they mean to each other and what their lives now stand for.
And while Carolyn has shot a man in cold blood, she is trying to find out who is responsible for the hit on her son. This one is going to be a lot more personal and passionate than the seasons before. The series finale may not leave everyone alive.