Hi there! Long time Lurker first time caller

I have been trying to find books that are mysteries/thrillers that the ending is something where you just didn't see coming and the twist makes you pause and just say "…. wut…?" Like I read Ghosts in my head and THE ENDING HAD MY JAW ON THE FLOOR! so I'm looking for something that I'll pause and parce out scenes in my head. Can be scary, can be a murder mystery, could not be. Please help a brotha out 😭