A sinister toyshop. The Earth erupting in violence. Shockwaves travelling through history. With old friends powerless to help, the Doctor is drawn into a deadly duel against an old nemesis who can

The hugely powerful Key to Time has been split into six segments, all of which have been disguised and hidden throughout time and space. Now the even more powerful White Guardian wants the Doctor to

Know your frenemy. ‘I’ve had adventures too. My whole life doesn’t revolve around you, you know.’ When she's not busy amassing armies of Cybermen, or manipulating the Doctor and his companions,