Credit: ABC FAMILY/Eric McCandless

Pretty Little Liars has a talent for ending major episode with a bang, so what will the show manage to come up with for the all-important 100th episode, airing tonight? Whatever it is, showrunner Marlene King seemed to think it will take even the most savvy of viewers by surprise. What did she tease about the twist ending?

“It’s an epic episode, for sure,” Marlene told E! Online. “And then something really big happens at the end.” Before you assume that you know what twist Marlene is talking about, consider this: not even the cast saw it coming. Marlene continued: “It comes out of nowhere … I don’t want to say what it is, but at the table read, everyone turned their page and they’re like, ‘What?!’ They were a lot of WTFs.”

Comes out of nowhere, you say? We’re not even sure if we want to speculate, but we will. Might this mean another character death? It seems a bit soon after Mrs. DiLaurentis’ recent murder. Then again, this town isn’t exactly known for its restraint when it comes to murder. More likely, it has something to do with a connection between two characters we never imagined might be working or have worked together. Marlene spoke on the episode’s theme of return, saying: “There are a lot of people coming back to town. Ali’s coming back to school. It’s very thematic. There’s some new faces that we find out didn’t know knew some old faces. Some connections are made that we didn’t know about, so it’s big.”



Might the twist ending involve an unexpected connection with massive consequences? We can’t wait to find out!

What do you think will happen at the end of tonight’s episode? Share your theories in the comments below!

Catch the 100th episode of Pretty Little Liars airs tonight at 8 p.m. ET on ABC Family.

Kayti Burt is a contributing writer for Wetpaint Entertainment with a penchant for all things pop culture. Follow her on Twitter and Google+!