Theory:Doctor Who television discontinuity and plot holes/Frontier in Space


 * If the Master's device makes one see one's greatest fear, why does Jo see the ship change shape in episode one?
 * The implication is that she is seeing the effect of the device being turned on, but it's still an error; Jo wouldn't be afraid of a Draconian ship any more than any other kind of spaceship.
 * The fear of the other humans would likely have a psychic influence at that point to push her perception in that direction.
 * Since the hypno-sound should, realistically, only be useful once audio communication had been established between the ships (in space, no-one can hear you brainwash) then perhaps the Ogron ship has some sort of backup holographic cloaking device, although using the hypno-sound effect to establish that is just plain confusing...


 * If the Master's device makes Jo see people as Drashigs at first, then why wouldn't she see them every time she hears that sound?
 * Different fears are foremost in her mind at different moments.


 * What happens to the Master at the climax of this story? I can understand the Ogrons running off when the Doctor activates the hypno-sound fear device but surely the Master didn't. So unless he was actually carried away by some Ogrons there's no accounting for his absence at the end while the Doctor and Jo escape in the TARDIS.


 * In Episode 4, when the Doctor tells Jo about the events of The War Games, The Master knows all about it. However since those events were erased from history, the only Time Lords who would know about them would be the Doctor, the War Chief, and the three Time Lords from the trial.


 * Perhaps Master is the War Chief?