Because, yes, Pretty Little Liars and Riverdale exist in the same universe

Because, yes, Pretty Little Liars and Riverdale exist in the same universe ...

The main characters return to Rosewood, the town from the first series of Pretty Little Liars: Original Sin. They discover that some of the patients from Rosewoods Radley Sanitarium were sent to Riverdale by the Sisters of Quiet Mercy.

Yes, that Riverdale! The Riverdale that is the heart of the CW's Riverdale, the show that introduced a nitty-gritty spin on the Archie comics characters, the most recent season culminating with a comet hurtling toward town and catapulting everyone back to the 1950s.

It's official: the iconic teenage thriller Pretty Little Liars and the iconic teenage paranormal-crime-drama-opera-musical (?) Riverdalenow have a common history.

Riverdale was a completely different universe, so I assumed we wouldn't be permitted to invoke it, but it stayed, according to him. So, yes, I guess it does exist in the same universe.

Alex Aiono seemed to be a fan of the idea of a football rivalry between the two high schools in both seasons.

Aguirre-Sacasa stated that she wishes there would be a football match between the two. Who knows, though. I dont even know how far we might be permitted to go if we did push it further.

Pretty Little Liars was created by Sara Shepard and ran for seven seasons on Freeform (later known as ABC Family). It followed four separated friends as a mysterious stalker begins sending them threatening messages about their deep dark secrets. The show eventually deviated far from the original book series, creating an extremely tangled web of intrigue.

Pretty Little Liars: Original Sin is a third Pretty Little Liar spinoff, although the previous two didn't last long. The other two, however, are a different story until this episode, when they visited Rosewood and met up with a character from the original series (although played by a different actor).

The Chilling Adventures of Sabrina has already crossed over with Riverdale, although that connection is more complicated. After all, Sabrina is an Archie comics character. Lucy Hale, who starred as arty Aria Montgomery in Pretty Little Liars, also starred as Katy Keene in the Riverdale spinoff of the same name.

The original author of the Pretty Little Liars books has yet to speak up. The next question to think about is: Where does Glee fit in?