When the killer is fumbling through the closet to find the canister of ketone, the front of the can is facing the camera. Then the front of the can is suddenly facing the wall until the killer grabs it and turns it around, so that the front of the can is facing the camera again.
When discussing the popularity of Halloween, Reid refers to it as Samhain, however he mispronounces it; a more correct pronunciation of the Gaelic word is Sow-en (rhymes with cow)