Continuity mistake: There's a clear mix-up in editing during the car chase. Marta checks her phone twice for Blanc's calls as she tries to get away from the police. The first time the phone signals 9:36 AM, the second time 9:34 AM. (01:31:50)

Knives Out (2019)
Trailers
Directed by: Rian Johnson
Starring: Toni Collette, Chris Evans, Daniel Craig, Ana de Armas
More trailers
Benoit Blanc: I suspect foul play. I have eliminated no suspects.
Trivia: At the end, Benoit Blanc says he noticed the blood on Marta's shoe the first time she stepped in front of him. Rewatching the sequence when they first meet, as he says "I've been doin' a little pokin'" he does indeed look down as he speaks and takes a fraction of a second pause, noticing the blood but continuing to talk as normal. (00:23:45)
Question: How come Ransom did not realise that Marta had not given Harlan the morphine when he went back to the study room to switch the evidence?
Join the mailing list
Separate from membership, this is to get updates about mistakes in recent releases. Addresses are not passed on to any third party, and are used solely for direct communication from this site. You can unsubscribe at any time.
Check out the mistake & trivia books, on Kindle and in paperback.
Answer: She didn't drain either of the vials so unless he actually measured how much of each liquid there was to start with, he was unlikely to notice that the amounts weren't quite what would have expected. He knew enough to know that the switch could lead to a death, but he's not anal enough to note every tiny aspect of the situation to verify that nothing's gone wrong.
Garlonuss ★