As series creator Howard Overman revealed, "betrayal and grief" will lie at the heart of this new storyline. Back in London, Zara will have to be wary of everyone; even in her personal life, she will find it impossible to trust anyone other than Vincent. Vincent himself will undergo a drastic transformation compared to the first chapter: "While he was previously measured and thoughtful, he will lose control, revealing a violent side we hadn't seen before."