But with new showrunners come new eras, and Chris Chibnall, also formerly of BBC's Broadchurch, will be taking over Doctor Who in 2018. Whittaker was announced as one of the favorites leading up to the casting announcement. Before her starring turn in Broadchurch, she also had roles in Attack the Block, ABC's The Assets, and an episode of Black Mirror ("The Entire History of You"--remember, the one where Toby Kebbell goes nuts trying to figure out if his wife is sleeping with someone else by replaying all of his memories). She'll be the first female Doctor in history after 55 years and twelve other iterations of the character. Time Lords can appear as anyone or anything they want, and with today's announcement many fans breathed a long-held sigh of relief. A world in which the Doctor can finally be a woman is, well, fantastic .