Pretty Little Liars is a crazy show full of extreme twists. To stay ahead of the writers, fans have to come up with as many extreme, out-of-the-box theories possible. Fortunately, the Pretty Little Liars fandom is more than up to the task, so each week, we like to dive into the wilds of Tumblr and pick out an intriguing theory to explore.

There have been a lot of great theories in the wake of the intense Season 5 midseason finale, but today we want to highlight one of the very craziest we've seen, from Tumblr user Rosewood-Clues: That Byron is Bethany's father. We've already speculated that Bethany's dad may be Mr. Hastings since we know he was having an affair with Ali's mom, as was Bethany's dad but could the mystery father actually be Aria's (Lucy Hale) dad?


Wait, what? You may be saying? Byron? Why? Well, here are some of the reasons we like this idea.

1. Bethany has to be related to someone, right? We assume Bethany is tied to the Liars or Ali somehow, and this would be a very unexpected twist.

2. He's been unfaithful before. For this theory to work, Byron would have to have been having an affair with Ali's mom. But hey, he cheated on Ella with Meredith, so why not Mrs. D, too? This might, as the Tumblr user points out, also explain why Ali was so intent on blackmailing Byron. Perhaps it was motivated by anger or revenge.

3. Mental illness runs in the family. As this Tumblr user reminds us, mental illness runs in the Montgomery family. That would explain why Bethany ended up in Radley.

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