, director Rian Johnson discussed the film’s big twist and how he went about pulling it off., it’s revealed that Andi isn’t Andi at all, but rather her identical twin Helen pretending to be Andi. At the suggestion of Benoit Blanc, Helen goes undercover as Andi to prove that Miles Bron killed her twin. Johnson says that he “was dragged kicking and screaming” to the twins concept.
“I guess the primary thing was, it can’t just be seeing it from a different angle. It has to be enough of a basic perspective shift that there’s a new tension that’s introduced in the repeat of all the different scenes,” Johnson told. “This is what led to the idea of twins. By the process, I was dragged kicking and screaming to identical twins. I didn’t want to do it, it seemed like a horrible trope, and just, ‘Will the audience ever forgive me for this?’ [laughs].
Johnson also elaborated on ensuring that the lengthy flashback sequence that reveals the Andi/Helen twist was worth watching, even though audiences had seen the depicted events already. “In that way, the bigger risk actually becomes going that first half of the movie without it. It’s like if we played the first movie for half of it without introducing Marta,” Johnson stated.