The Doctor, Jamie and Zoe return to Earth and become embroiled in the schemes of Tobias Vaughn. They meet up with an old friend, Colonel (now Brigadier) Lethbridge-Stewart, and some old enemies, the Cybermen.
Patrick Troughton , Frazer Hines , Wendy Padbury , Kevin Stoney , Nicholas Courtney , Edward Burnham , Sally Faulkner , Peter Halliday , Clifford Earl , John Levene
BBC
