* TheCameo: Julian Glover as Anna's older brother who tells Ben her history.
* {{HSQ}}: While Angela's death is most certainly this, an earlier one comes when Ben first finds the handprint on the inside of the mirror...and then after panning the flashlight up, finds ''hundreds of them all over the glass''.
* JustHereForGodzilla: The [[spoiler:Jaw Ripper]] scene.
* {{Narm}}
-->'''Ben:''' ''Don't make me threaten you!''
* ParanoiaFuel
* {{Squick}}: [[spoiler:Angela Carson]]'s death. [[spoiler:She is killed by her reflection as it grips its jaw and slowly pulls its mouth apart, causing her to bleed profusely.]]
** And [[spoiler:Gary Lewis]]'. [[spoiler:The mirror kills him by slashing its throat, causing him to die]]. Made so much worse by the fact that we don't get a murderer's hand to obstruct our view, like we would if it was another person doing it.
* WhatAnIdiot: [[spoiler: Michael removing the paint on the mirrors and turning the water on throughout the house, causing the near-death of his mother and his father to get trapped in a Mirror Dimension forever]].
** The implication was that his [[EvilTwin Evil Mirror Twin]] was [[PeoplePuppets making him do these things]] so as to let the demon into their home; pay close attention to the scene where it turns out Ben and Amy missed the reflective doorknob--it's Michael's reflection in it that opens the door, and presumably leads him off to go turn on the water and all the rest.
* WhatDoYouMeanItsNotSymbolic: Both [[TheAtoner Ben]] and the [[EldritchLocation Department Store]] are ''[[JustForPun burnt out]]'' husks of what they used to be and display a dual nature that rapidly shifts between light and dark. Also, Ben's attempts to free the spirits trapped in the mirrors parallels [[MyGreatestFailure his greatest failure]] since they give him the chance to [[TheAtoner make up for]] the shooting victim he couldn't save. And after freeing the spirits who otherwise would have been trapped forever [[spoiler:he is trapped forever himself]].
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