Warning: This article contains spoilers for the Pretty Little Liars book series.
If you've somehow missed this entire discussion, you can get a rundown of it here. But the basic idea is inspired by the Pretty Little Liars book series, where it turned out it was Ali's twin, not Ali, who died.
While the TV show writers have gone in a very different direction than the books for a lot of plot lines, Mona was the original "A" in the books, so clearly the show isn't afraid to parallel the book series it was based on. There have been copious clues that Ali may have had a twin on the TV show, too. And after the revealing flashback in Season 3, Episode 22: “Will The Circle Be Unbroken?” that made it sound like Ali knew she was going to "die" we're more convinced than ever that her fate is more complicated than mere murder.
What do you think: Is Ali still alive? Vote in our poll, and sound off in the comments below!