“If I guess the plot right, can we not watch the movie?”

“Go on.”
“Whole time its the man who is schizophrenic.”
Actually, it was the first stupidest plot of movie which crossed my mind at the moment. I just didnt want to watch another scary freaky movie at the same night.
She didnt remember, so we watched the film one day after, after all, i like being scared, so wanted to see what happens. Trailer looked really good. The film was good if you cut the end.

If you guess the name of the movie right, does it worth to watch it?