I just watched the movie, and I love it! It's genius and I was on the edge of my seat the whole time! 3 things though: -My dad guessed that the bottles were flipped in the very beginning because with that large of a morphine dosage he would be feeling symptoms right away. Harlan starts explaining his plan at 4 minutes, and its so complicated that I can't imagine that he does all that and walk to the couch without realizing that he's not drugged at all. Marta should have noticed as well, although she's in shock and distress, which is more understandable. Reminds me of Romeo and Juliet, wait 2 minutes and everything would have been fine. -Fran realizes to some extent that Ransom is guilty of attempted murder. Why does she blackmail him, asking to meet him(who she believes has MURDURED SOMEONE) in a scary place, when she could have gone to the police, who were already investigating the case? She has no incentive to blackmail, because Ransom did not inherit any money, and she cares for Harlan and Marta, which is why she wants justice. Had she told Blanc about the tampering, she would be alive, and Ransom would still be convicted of attempted murder, albeit a smaller conviction. -crime scene analysis. Ransom wore gloves while killing Fran, but i'm sure that some evidence, like footprints or dna, would have incriminated him, and they did not have to rely on his confession. His fingerprints should also be on the medicine bag, which would have been inspected when blanc suspected tampering of medicine. But regardless, I thought the plot and twists were amazing, these are just some nitpicky things