The Doctor tries to deal with the Tractator's cunning plan, despite Turlough's best intervention. They discover the splintered TARDIS in the tunnels beneath the planet's surface, but how will they put it together again?
Did You Know?
In the original script, both the excavation machine and a translating device which was intended to float beside the Gravis were originally envisioned as being made from the remains of the human colonists kidnapped by the Tractators. These ideas were deemed too gruesome, however, and were scaled back as much as possible. See more