
Doctor Who (1963)
3 revealing mistakes in season 6 - chronological order
The Invasion - S6-E3
Revealing mistake: The Cyberman that falls from the roof in the final episode is obviously an empty costume. (This is another example of a mistake being repeated from an earlier episode. See the earlier story "The Tomb of the Cybermen" for a note about the same 'revealing' mistake happening).
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Revealing mistake: When Jamie is wrestling with one of the Ice Warriors in a storage room, one of them gives the wall an almighty knock and it nearly falls down.
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Revealing mistake: When the resistance are storming the landing bay, one of them punches at least a foot to the right of a guard's face, but he still collapses.
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Josman