Never realized till now that the swan was a symbol for the killer they were looking for. That’s why she asked about the “swans” and he corrected her by saying it was just one. And that’s the same spot he has the epiphany and realizes there are more than one killers later in the film. Edgar Wright, you are amazing. Watched the movie 20 times and I’m still figuring shit out. Or I’m just a moron for just figuring that out. Either way, it’s neat.