Terminator 2 didn’t even feature a single shot from the actual movie in its teaser trailer. It was just that iconic:
I mean, (assuming you’ve seen it already) from what I remember the entire first act is set up for the audience to believe that the T800 is the bad guy again, hunting down Sarah Conner just like before, with a huge reveal when he ends up saving her and her son instead, and the trailer gives that away in the first 30 seconds.
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