Singh: I feel like this was — excuse my language — intended to be a "fuck the patriarchy" moment. If Alice was the one to murder Frank, then that would have come across and made sense within the story.
But with Gemma Chan's Shelley, it felt like an out-of-character move. Throughout the movie, she acted as Frank's loyal, supportive, and devoted wife. She even piled on to the gaslighting of Alice during the film's dinner scene, calling Alice a "brat."
Shelley stabbing and twisting the knife into Frank's chest wasn't as impactful as it should have been because her reasoning and motives were never addressed before or after that moment.
Guerrasio: When everything is going off the rails at the end of the movie, it's definitely a puzzling moment when Shelley stabs Frank. She calls him stupid and that it's "her turn now." Then we never see her for the rest of the film.
I was really hoping for some kind of showdown with Alice at the exit. Maybe that's an ending that didn't make the cut? I have a feeling a lot of things didn't make the final cut.