SEASON: 5
Синопсис
Part one of two. When an ambitious project to drill into the Earth wakens an ancient enemy, the Doctor leaps into action. As Amy learns she cannot trust even the ground under her feet, it becomes clear that while humans were digging down, another species was on its way up. Meera Syal, Neve McIntosh and Robert Pugh guest star alongside Matt Smith and Karen Gillan.