Is there a Sleepy Hollow without Abbie Mills?

Well, technically, yes, since it's returning for a fourth season. But Fox Entertainment President David Madden admits executives weren't sure about renewing the drama at first, given Nicole Beharie's departure after the Season 3 finale.

Catch up on all the latest news from TCA

"It was obviously a very hard conversation. Crane (Tom Mison) and Abbie (Beharie) were the spine of the show," Madden told reporters Monday at Fox's Television Critics Association fall previews. "It was difficult to figure out whether it was right thing to do to continue or not. The producers very emotionally said, 'We think there is a fourth season of the show and longer.'"

Fox is in "significant talks" for more episodes of The X-Files

Madden said Fox was impressed by the producers' pitch of "new characters and new situations for Crane to get into." The show will return midseason on Fridays at 9/8c. "If you watched the finale ... it gives you a pretty good clue as to where Crane is heading. Hint: Washington, D.C.," he said. "We think there is a lot of good, new story to tell and that's why we made that decision."

Here are other highlights from Fox's TCA panel:

Mariah Carey will cameo on Empire

Mimi hearts Empire: Fox Chariman and CEO Dana Walden revealed that Mariah Carey's previously announced guest spot on the music drama had been in the works for a couple of years. "Mariah loves the show," she said. "I've actually seen her a few times out at events and she always makes a point of coming over and talking about her passion for the show." Carey plays Kitty, an artist who comes to Empire Entertainment to collaborate with Jamal Lyon (Jussie Smollett) on a new track. She filmed last week and producers are "very happy with it."

Amy Schumer will dominate Fox's Animation Domination in September

Why Pitch moved: How intimidating is TGIT? Walden admitted that Fox didn't initially schedule new drama Pitch - about the first female pitcher in MLB history - because it didn't want the show to go up against Scandal. Fox moved Pitch to Thursdays at 9/8c after ABC confirmed Scandal will be held to midseason to accommodate Kerry Washington's pregnancy. "Scandal moved out of the time period and there was an opportunity for us. It's clearly going to be a show that's strong with female viewers," Walden said. "[Going up against Scandal was] not appealing. ... For a variety of reasons, fall is ideal for the show. ... MLB leading up to the playoffs. ... [But] we kept it off initially because we didn't want to schedule it against Shonda [Rhimes]."

The Simpsons is super-sizing with an Empire guest star

Beat Shazam: Fox has ordered a new game show from Mark Burnett, in which teams of people will compete to identify songs. The last team standing will then compete against Shazam in the final round. There is no premiere date yet.

Get ready for a New Girl-Brooklyn Nine-Nine crossover event

The Rocky Horror Picture Show: Since Fox's remake of the cult hit isn't live (it premieres Thursday, Oct. 20), director Kenny Ortega has integrated the fan participation element with an audience commenting on the show, a la the midnight screenings.

Hamilton director Thomas Kail signs big deal with Fox TV

More live musicals: After the success of Grease Live, Fox is looking for its next live production, but had no announcements to make Monday. "We're absolutely interested in doing more live musical events like Grease,and we're working hard in a lot of different directions to find the next thing we're going to do," Madden said. Grease Live and Hamilton director Thomas Kail has signed an overall development deal with Fox, but he has no specific project lined up yet. "Tommy is an omnivore. He wants to do as much as he possibly can," Madden said. "We would be excited to have him do a live event, but he's very interested in the scripted drama space and the comedy space as well."