The 2017 holiday episode, 'Twice Upon A Time,' marked Peter Capaldi's exit from the series as the Twelfth Doctor.
Whittaker's debut even scored the highest numbers for an episode introducing a new Doctor since the 2005 series revival starring Christopher Eccleston. Season 11, starring Jodie Whittaker as the Thirteenth Doctor, has achieved significant ratings success since it premiered last September. The Doctor Who 2019 holiday episode 'Resolution' reportedly took a tumble in the ratings among BBC America viewers, compared to the previous special.
