The Satan Pit

STORYLINE

The supposedly servile Ood are now in the control of some type of beast that describes itself as Satan and claims to be a being that has existed since before the creation of the known universe. Rose takes charge and tries to find a way to get everyone out safely. The Doctor and Ida have descended 10 miles into the bowels of the planet only to find themselves trapped there and unable to return to the surface. They find evidence of a ancient civilization and a seemingly bottomless pit where the doctor confronts the beast and finds the solution. The only problem is that the solution may kill Rose.