When Pretty Little Liars season 6B returns in January, the show will jump five years into a future that looks different than the one fans knew and loved — Hanna is traveling the world for her fashion career, engaged to a guy who isn't Caleb. Emily is bartending in California after dropping out of Pepperdine University, coping with the devastation of her father's death in the army. Spencer graduated from Georgetown University and is pursing an ambitious political career while rocking a very controversial set of bangs. Aria has a new boyfriend and a budding career in publishing — which just so happens to mean she is working with Ezra again.

Only Alison — who for years tried desperately to leave her life in Rosewood behind her — has stayed put, teaching at Rosewood High School and nursing her relationship with her newfound sister Charlotte, the supposedly reformed 'A' who is now under top-notch medical care. Convinced that Charlotte is healed, the season kicks off with Ali asking her friends to return to Rosewood for a hearing that could release Charlotte from medical supervision. (As you can imagine, the Liars — and Mona — seem to feel pretty meh about this particular idea.) But of course the Liars return to Rosewood and immediately encounter a new threat that I. Marlene calls "The Big Bad" — an anonymous villain who isn't just out to expose the Liars' secrets, but to threaten their lives.

The Pretty Little Liars: 5 Years Forward special was truly a love letter to the show, featuring new interviews with the entire cast and introducing behind-the-scenes crew members that fans of the show haven't heard from much in the past. Here were a few of the juiciest nuggets revealed in the special, including some new secrets about the OG pilot episode.

1. The Liars had just a few hours to adjust to their new characters. "When we made this time jump, we literally wrapped an episode one day, and made the time jump the very next day," explained I. Marlene King — meaning that entire sets (like the girls' bedrooms) were permanently destroyed overnight, a change the Liars said was surprisingly challenging and emotional.

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2. Radley is now a hotel. Bye, creepy mental hospital that anyone and their brother could break into!

3. Expect the Liars to look really different. "There's a huge change with all of the girls," said costume designer Cameron Dale (who is new to the show). "But we'll still see an essence of their high school self." For instance, Dale gave Emily's wardrobe a beachier vibe to reflect her move to California, but Aria will stay true to her love of mixing patterns and colors. "The biggest note I got from all the girls was 'less jewelry, smaller jewelry,'" said Dale. So don't expect to see any forks as earrings.

As for makeup, "I decided to do the opposite of what they were in high school," said head make-up artist Cindy Miguens. That means Aria and Hanna will stick to a more natural look than they had as smoky-eyed teenagers, whereas Emily's makeup will get darker and more "west coast." Miguens says Troian Bellisario — who almost always had a bare face during her character's high school years — had the strongest opinion on her new look, and that they worked together to make her makeup choices more sophisticated.

4. Ashley Benson found the theme song for Pretty Little Liars. I. Marlene King says most people think the theme song, "Secret" by The Pierces, was written specifically for the show, but Ashley was actually the one that convinced her to use it. "I remember we got into the van [after filming the pilot episode] and you pulled up your phone and you were like, 'I have an idea for the theme show song,'" said Troian.

5. During the pilot, Troian was sucking down ice cubes. The first episode — where the girls have a slumber party in Spencer's barn and awake to find Ali missing — was shot in Vancouver on a freezing cold night, even though the episode is supposed to take place during Labor Day weekend. Troian got so cold that her breath was showing on camera, so she had to keep eating ice cubes to cool her mouth.

6. Spencer's new pad is a throwback to the Pretty Little Liars book series. In Rosewood 2.0, Spencer lives in her barn, which we haven't seen from the inside since it was creepy and rundown in the pilot episode. Now, it's totally revamped — a nod to Spencer's character in the books, who is an interior designer, explained Troian Bellisario.

Here's what the barn looks like now [as shown on the TV special]:

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And here's what it looked like back in the day [scary AF]:

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7. Ezra and Toby are now besties. "Our characters, over this time jump, we go fishing like every weekend — we're like best friends," explained Keegan Allen of his character's tight friendship with Ezra. "Yeah, we have a real bromance," added Ian Harding.

8. Emily is hiding a major secret. "I think Emily comes back with the biggest secret" said I. Marlene King — who, true to form, refused to drop any further spoilers.

9. And the best news yet: Prepare to see a LOT more Caleb. "I feel like I had to show a lot more skin," Tyler Blackburn said of the new season. No complaints here.

Pretty Little Liars returns on Jan. 12 at 8/7c on ABC Family.

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