* {{Anvilicious}}: War is BAD. Organized religion is ''literally'' puppy-kicking awful, if you believe the third book.
* FanPreferredCouple: Doon x Lina, though they are PlatonicLifePartners [[spoiler:for ''most'' of the series.]]
* ItWasHisSled: The fact that Ember is an UndergroundCity is not found out until the end of the first book, but good luck finding someone who treats that like a spoiler (Hell, it even says this on the main page!).
* NightmareFuel: Well, in addition to the idea of being trapped in darkness without food or light for all eternity, the film has [[AttackOfThe50FootWhatever giant carnivorous star-nosed moles]]. With prehensile tentacles for noses.
* ParanoiaFuel: One doesn't have to be a rocket scientist to figure out that the situation in ''The Prophet of Yonwood'' (the U.S. battling a terrorist nation that threatens total war) is a natural progression from what the world is going through today.
* SpecialEffectFailure: The film's special effects are pretty good, but start to fall apart by the end of the movie. Either the budget started running out or they were banking on viewers being engaged enough to ignore the Conspicuous CG.