The Mark of the Rani

Drawn off course en route for Kew Gardens, the TARDIS materialises in the mining village of Killingworth in the early 19th Century, and the Doctor and Peri find themselves in the midst of a Luddite rebellion. Why are peaceful men resorting to mindless violence, and why is the Master intent on sabotaging the Industrial Revolution? In order to safeguard Earth’s future, the Doctor must defeat the combined forces of two rogue Time Lords from his own past...