What was a book with an ending you can’t stop thinking about?

A book with a SUPER satisfying ending? Or a book that leaves you with provocative questions you’re still puzzling over? A book with an ending that felt perfect and made you want to immediately go back and start from the beginning? Give me all your fantastic, meaningful endings.

(They don’t have to be happy endings, and they can even be ambiguous endings if that feels like the “right”/best ending for the story.)

I’ve realized that how good the ending is seems to make or break a book for me, so I’m so excited to read all of your recs! Thank you for helping me out of my reading slump! 🙂