I want to watch this movie, when it's possible and guess. BUT...
I used to be VERY into whodunit's... Agatha was my favorite.. but several others as well..which lead me to this:
The most amazing whodunit I ever read... and you should kick my ass for this. I can NOT remember who wrote it, or the title... but here's what the guy/gal did...
In the first paragraph of the book he/she told you the killer... right up front.. nothing 'deceiving' about it... yet by the last few pages you were guessing. It was brilliant. I'll never forget it. My cousin had taken my recommendation and had begun the Agatha books... he was hooked... when i recommended it to him I told him, "You will know the killer in this first paragraph, and then NOT know the killer by the end of the book"... and I was right.
Man I HAVE to remember that whodunit..as I said, brilliant. - JamesJM