Where is the Doctor? When the skies of Earth are frozen by a mysterious alien force, Clara needs her friend. But where is the Doctor, and what is he hiding from? As past deeds come back to haunt him, old enemies will come face-to-face, and for the Do... (more)ctor and Clara survival seems impossible.

Aaron Neil, Benjamin Cawley, Clare Higgins, Daniel Hoffmann-Gill, Dasharn Anderson, Harki Bhambra, India Ria Amarteifio, Jami Reid-Quarrell, Jaye Griffiths, Jemma Redgrave, Joey Price, Julian Bleach, Kelly Hunter, Michelle Gomez