"This is one of the rare films with a plot twist that becomes a completely different film genre after the first viewing"
I read this bit of trivia from *mdb for this movie. What does it mean? Just looking for people to talk through what genres are meant here, and how exactly the movie changes upon second watch after knowing the twist.
Just to make clear, I know what the twist is, but I don't know how that affects the genre of the entire movie.