Not showing the trailer because it’s more or less a spoiler for the movie itself. You can see it here. The Gemini Man movie certainly looks interesting — it’s a nice vehicle for Will Smith, who could use one — but the trailer gives it all away, right from the start. Of course, I don’t know how you can make a coherent trailer about this movie without giving away the concept, so there’s that.
I know that this all sounds confusing, but watch the trailer at the link and you’ll see why I’m being this vague.