Dominic Allan

His Dad's dead, his Mum's a tart, and 13-year-old Jimmy finds it hard to keep on the right side of the Law.

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.