Theory:Doctor Who television discontinuity and plot holes/Image of the Fendahl


 * In episode four the Doctor says that the Fendahl killed the hiker and Mitchell, but he cannot possibly know their occupations or names.
 * There are several opportunities for him to have learned that information from characters off-screen.


 * How does the Doctor get out of the locked cupboard in episode two?
 * He had been using the sonic screwdriver on it in the previous scene.


 * Why did the Time Lords take such an extreme measure of time-looping the 'fifth planet' in order to contain the Fendahl but did not take similar precautions with the Sutekh (See Pyramids of Mars), who was surely no less of a potential threat to the cosmos?
 * By the time the Time Lords did time-loop the fifth planet the Fendahl had already destroyed all life there, so there was no harm in doing it, whereas there were millions of people living on Earth at the time of Sutekh's imprisonment and it would have meant condemning the entire human race to eternal imprisonment.


 * There is a "cheat" when the cliffhanger to Part One is reprised in Part Two: Leela is seen to pull back from the doorway before Ted Moss shoots.


 * Where does the Fendahleen at the end of Part 3 and beginning of Part 4 come from? The Fendahl had not yet manifested itself in Thea and started converting the cultists in the cellar into its other components.