Given "PLL"'s long-standing penchant for twin twists, it seemed there was a chance the Beasley sibling who died during the Spirit Queen ball was actually Kelly, not Karen. One viewer noticed that the movie references on the show may have subtly hinted at this twist.
Reddit user @achterlicht noted that the four movies that screen at the Orpheum where Tabby works are "about people pretending to be someone else, some more direct than others." The titles in question are "Body Double," "Dressed to Kill," "Get Out," and "Us." They added that another reason this theory was not so far-fetched is the fact that Imogen mistook Kelly for Karen at the dance, which may not have been a mistake. After all, the two were best friends and were past such "twinfusions," as Kelly pointed out.
Let's not forget that it was Karen who delivered the flyer of the 1999 rave to Davie in the premiere episode, saying it was taped to their front door.
Despite all these signs, it becomes clear early on that Kelly can't be "A." Faran becomes convinced Kelly is actually Karen in episodes four, five, and six. At the Liars' Halloween party, "A" is spotted watching the pair argue about that very thing, and they attack Kelly while she's practicing ballet in episode six. Jury's still out on whether Karen stole Kelly's identity, but she's definitely not A.
