Pretty Little Liars is a show that's all about the twists and turns. Fans have learned to expect the unexpected, and are constantly coming up with creative theories about all the craziness that happens in Rosewood. Sometimes, those theories turn out to be spot on, which is why, each week, we like to delve into the wilds of Tumblr to highlight an interesting idea that might just turn out to be the key to everything


This week, we want to talk about a smart theory from Tumblr user KissesFromRosewood: That Ian Thomas (Ryan Merriman) is the one who attacked the girl in Ali's grave maybe as a way to help Ali escape.

Why would he do that? Well, the Tumblr user theorizes that perhaps Melissa Hastings (Torrey DeVitto) recruited Ian to kill Ali for her/the N.A.T. club, but Ian ended up not being able to do it, since he was involved with Ali. Instead, he killed another girl to put in her grave.

We like this theory because it would explain why Melissa seems to know so much about what happened that night, while also explaining why she now seems so much more distraught than she has in the past she realizes that she inadvertently led to some random girl, not Ali, being killed. Plus, it also explains one tiny detail that we hadn't considered much before: That Ian's response to Ali in the church during the Season 1 finale was "what are you doing here?" and not, say, "WTF I thought you were dead!"

What do you think of this theory — is it possible, or totally crazy? Sound off in the comments below.

Catch the next episode of Pretty Little Liars Season on Tuesday, July 1, 2014 at 8 p.m. ET on ABC Family.