What I absolutely love is the specific, mysterious revelation of "How is he doing this, this shouldn't be possible".
Spec Ops: The Line touches this a little bit - with some actions and messages leaning toward incredulity that 3 soldiers have been destroying an entire battalion.
The movie Willie's Wonderland also aims for this. The lite mystery is how the animatronics became possessed, but the big mystery is who/what the hell the Janitor that wandered into town is.
On a similar note, you get a bit of that feel in Half-Life 2 from Dr. Breen's angry message to the Nova Prospekt soldiers for them missing you at Black Mesa East; "This is not some agent provocateur or highly-trained assassin!! Gordon Freeman is a theoretical physicist!"Redfields are just straight up built different.
