In a number of 1980s episodes, recurring villain The Master often first appeared in disguise. Actor Anthony Ainley was credited under a pseudonym on these occasions (usually an anagram of his own name) in order to preserve the element of surprise. See more

Alternate Versions

The first episode of Doctor Who to air in the UK was in fact the second episode ever made. Like Star Trek, a first pilot was filmed but never shown. This version is fairly similar to the aired version, but contains a number of subtle differences. In particular, a different version of the theme tune is used, and the Doctor comes across as more of an anti-hero in this version. See more