With planet Earth choking under the poison sky, the Doctor must stop the Sontarans' threat to the planet.
#1 | Released 2008-05-30, Rated TV-PG Score 18.250 |

#2 | Released 2008-05-30, Rated TV-PG Score 18.020 |

#3 | Released 2008-05-30, Rated TV-PG Score 16.837 |

#4 | Released 2008-05-30, Rated TV-PG Score 15.104 |

#5 | Released 2008-05-30, Rated TV-PG Score 13.021 |

#6 | Released 2008-05-30, Rated TV-PG Score 12.806 |

#7 | Released 2008-05-30, Rated TV-PG Score 12.596 |

#8 | Released 2008-05-30, Rated TV-PG Score 12.398 |

#9 | Released 2008-05-30, Rated TV-PG Score 12.390 |

#10 | Released 2008-05-30, Rated TV-PG Score 11.798 |

#11 | Released 2008-05-30, Rated TV-PG Score 11.602 |

#12 | Released 2008-05-30, Rated TV-PG Score 11.307 |

#13 | Released 2008-05-30, Rated TV-PG Score 11.059 |

#14 | Released 2008-05-30, Rated TV-PG Score 10.885 |

#15 | Released 2008-05-30, Rated TV-PG Score 10.663 |

#16 | Released 2008-05-30, Rated TV-PG Score 10.656 |

#17 | Released 2008-05-30, Rated TV-PG Score 10.645 |

#18 | Released 2008-05-30, Rated TV-PG Score 10.261 |

#19 | Released 2008-05-30, Rated TV-PG Score 10.158 |

#20 | Released 2008-05-30, Rated TV-PG Score 9.8722 |

#21 | Released 2008-05-30, Rated TV-PG Score 9.3247 |

#22 | Released 2008-05-30, Rated TV-PG Score 9.2480 |

#23 | Released 2008-05-30, Rated TV-PG Score 9.2324 |

#24 | Released 2008-05-30, Rated TV-PG Score 9.0849 |

#25 | Released 2008-05-30, Rated TV-PG Score 9.0741 |
