3/6 Despite the mounting evidence, Chief Robson refuses to acknowledge the approaching danger
2/6 As the situation worsens at the refinery, Chief Robson refuses to halt the gas flow...
1/6 The Doctor, Jamie and Victoria find themselves on Engalnd's coast near a gas refinery.
6/6 When their HQ is destroyed by the web and everyone is captured by Yetis, all seems lost.
5/6 The Great Intelligence demands that the Doctor allows his mind to be drained.