Enough TARDIS shenanigans! This episode is all about the Doctor and Clara saving a village of Vikings from an invading hoarde of… space vikings? Plus lots of interesting talk of immortality, identity, and responsibility, and references to Matt Smith and David Tennant. Join us for our breakdown of this episode, which features Maisie Williams from “Game of Thrones” as Ashildr. Host Jason Snell with Dan Moren.