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So you use the word "foreshadows", which is Foreshadowing.
If it's really subtle, like maybe the little girl on the tricycle could easily be dismissed as completely unimportant the first time seen, it might qualify as a Rewatch Bonus.
Today's my second or third time watching this episode. If I noticed the little girl before, I completely forgot about her. So this is definitely a Rewatch Bonus. Thanks for that one.
I'm not sold on foreshadowing. I think someone else who watched this episode and read that recap would think Foreshadowing's a shoehorn...
There is also Meaningful Background Event, which would go along with how the trike girl appears just at that point in the conversation. Maybe not so much Foreshadowing as related?
It can also just be a subversion of Chekhov's Gun if the work leads you to think "this thing/event will be important later", but it never is.
Thank you very much, PCD, for Meaningful Background Event, I've added it in.
@Bootlebat I'll look on the Chekhov's Gun page for subversions, see what it says about that...
In The Pretender S 1 E 02 Every Picture Tells A Story, Sydney tells Miss Parker that she was a happy little girl. Just then a little girl passes by on a tricycle. Later in the episode there's a sort of flashback to something traumatic that happened to Miss Parker as a little girl on April 13, 1970.
The little girl at the beginning is presumably not related to Miss Parker and has no further use in the story, but she foreshadows that something about a main character's past will be revealed.
I'm certain we have this trope, I just have no idea what it's called or how to find it.