Now that Big Little Lies has finally and officially been renewed for season two, we're getting good and prepped for our epic return to the dark, twisted, dramatic world of Monterey. Naturally, we've already dug up plenty of details about the second instalment of the insanely popular HBO series. But first, it's important to look at the cast. Who is officially returning for season two? Well, only two stars have officially been locked in, but we've added a few more using our powers of critical thinking and deductive reasoning.