Doctor Who Season 4 Episode 5 - The Poison Sky

Airdate: 2008-May-03

Episode summary:

The Sontaran fleet watch from space as the Earth is gripped in a deadly blanket of poisonous fumes. Whilst UNIT collides with Sontaran ground forces, the Doctor and a treacherous clone of Martha attempt to locate a missing TARDIS, and Donna finds herself trapped aboard the Sontaran ship itself...

About Doctor Who series:

Doctor Who is a British science fiction television program produced by BBC. The Doctor Who series 8 features the 12th Doctor played by Peter Capal...Show more >