The blue crystal that the Doctor took from Metebelis III in a previous adventure is desperately sought by the Eight Legs, a race of mutated spiders, as the final element in their plan for universal domination. With help from an old mentor, the Doctor realises the only way to foil the plot is to make the ultimate sacrifice. The Doctor must risk death to return to the cave of the Great One and save the universe.
as The Doctor
as The Doctor
as Sarah Jane Smith
as Brigadier Lethbridge-Stewart
as Mike Yates
as Sergeant Benton
as Lupton
as Land
as Keaver
as Moss
as Barnes
as Tommy
as Cho-Je
as K'anpo
as Professor Clegg
as Policeman
as Soldier
as Man with Boat
as Hopkins
as Tramp
as Sabor
as Tuar
as Arak
as Neska
as Rega
as Guard Captain
as Guard Captain
as Spider Voice
as Spider Voice
as Spider Voice
