Doctor Who Season 1, Episode 11 : Boom Town

The Doctor and his companions visit Cardiff, where he encounters an old enemy he thought long dead. It turns out that a scheme to build a new power station conceals an alien plot that threatens to destroy the entire world. Guest Stars: Alan Ruscoe, William Thomas, Mali Harries, Aled Pedrick, Annette Badland, John Barrowman, Noel Clarke,

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