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The Doctor attempts to test his new dematerialisation circuit by taking Jo to Metebelis Three but instead the TARDIS arrives in the hold of a 1920s cargo ship.
Did You Know?
This serial was released by the BBC on video cassette in the UK in March 1995. See more
When the Doctor exits the TARDIS at the end of the episode, he leaves the door open. The scene then cuts to a special effects composite shot with a model TARDIS, the door of which is closed. See more
The generators were built by the old Eternity Perpetual company. They were designed to last forever; that's why the company went bankrupt.