Foreshadowing & eastereggs in the show

!Spoiler for show & books! Seriously. It's basically the final plottwist so go away if you haven't read book 5.

I'm on my third rewatch and just realized how Norrie foreshadows the final plottwist of the entire series while talking about her and Lucy's plans for the future. She says: The ghost of Marissa Fittes will come back from the dead and drag her raggedy arse out of her coffin and beg us to sign up with her. Which is not exactly what happens later in the books, but it's pretty close.

Did you notice anything else like this? Do you have a favourite moment/line that was directly taken from the books? Or did you notice small eastereggs?

I want to keep this rewatch as interesting as my first, so give me all your favourite little details.