The TARDIS has materialised in a world of trench warfare, barbed wire and poison gas: the Western Front, 1917. In the chaos and paranoia of the First World War, the Doctor and his companions are…
The Time Lords are in crisis. A powerful force is draining their energy into a mysterious black hole - and they must recruit the Doctor to save them. But one Doctor isn't enough for this mission.…
BBCi webcast [2001-07-13]