Theory:Doctor Who television discontinuity and plot holes/The Vampires of Venice


 * In her final scene, Lady Calvieri removes her clothing before throwing herself into the water, however it is clear from when her perception filter malfunctions that the clothes are completely illusory. Master Calvieri similarly removed his cloke and wields a sword, both of which are also illusions. However, the sword hits are felt by Rory and the broom he is using is cut by it.
 * None of the other Saturnians appear to be wearing perception filter generators, which implies that Lady Calvieri's device is shielding all of them, however if Amy' kick damaged her device enough to cause her to blink into her normal form, why are none of the others affected?
 * If the perception filter has a self preservation loophole, then why is Isabella unable to percieve herself being physically transformed into a Saturnian?
 * The Saturnian's aren't vampires, they're fish. So why do they have such a problem with sun, why do they need blood, etc? They explained the reflection, they explained the blood, but they never explained the sun well. The sun may have been drying them out, as we were shown problems with hydration, but why would it burn them?
 * Fish usually live in dark oceans, especially looking at this type of fish. Therefore, they will shy away from sunlight and probably heat up to an extent in which they explode.


 * If Saturnyne was lost to the crack then shouldn't the planet and by extension the Saturnynians (Who presumably evolved on the planet) cease to exist?
 * It was just the planet that ceased to exist, not the actual aliens themselves.
 * As I said before if the planet ceased to exist, the Saturnynians (Who presumably evolved on the planet) would cease to exist as well.
 * Lady Calvieri said they escaped through one of the Cracks; they had lots of them appearing all around their planet.
 * Yeah, so what if the planet goes. If a house you were born in and lived in disappeared from time, would you be gone too? No. Same goes for them.
 * But, if Planet Earth disappeared from time, then every human would be gone, as we are all born on Earth, so the Saturnian's should cease to exist as their planet is gone, so they should be wiped from time.
 * Since they escaped through another crack, it is likely that going through that crack cancelled out them disappearing from time.


 * Doctor usually asks all the alien races to withdraw peacefuly so he can find them a new home. Why wouldn't he do it now seeing how Lady Calvieri didn't particularly care about the death of the human race and just the survival of her species?