Hollywood is buzzing with anticipation—and a fair bit of scandal—as Colleen Hoover’s bestselling novel “Regretting You” explodes onto the big screen this fall. With a cast that reads like a who’s who of rising stars and seasoned icons, and a plot so twisted it could only come from the mind of Hoover herself, “Regretting You” is already being hailed as the must-see movie event of 2024. ET was the only outlet granted exclusive access to the Atlanta set, and what we saw behind the scenes will blow your mind.

**Explosive Family Secrets—A Daughter’s World Shattered**

McKenna Grace, the breakout star you know from “The Handmaid’s Tale” and “Ghostbusters: Afterlife,” steps into the shoes of Clara, a high schooler whose seemingly normal life is ripped apart by a single, devastating revelation: her father and her beloved Aunt Jenny have been having an affair for years. If that’s not enough to send shockwaves through any family, the two lovers die together in a car crash, leaving Clara and her mother, played by the ever-talented Allison Williams (“Get Out,” “Girls”), to pick up the pieces.

Grace doesn’t hold back when describing the chaos her character faces. “I’m going crazy!” she laughs, “but then I’m also having this little romance on the side. It’s kind of about us processing grief and also falling in love. A lot going on. You know, typical Colleen Hoover novel stuff.” But don’t let her smile fool you—what’s happening on set is anything but typical.

**Allison Williams: A Mother’s Heartbreak, A Family Torn Apart**

Williams delivers a powerhouse performance as Morgan, a mother reeling from betrayal and loss, forced to confront the ugly truth that her husband and her own sister were hiding a secret life. “Don’t you want to know why they were together?” a character asks in the trailer, as the audience is left gasping for answers. Williams’ emotional range is on full display, moving from heartbreak to anger to fierce protectiveness as she fights to hold her family together.

The chemistry between Williams and Grace is electric, and sources say their off-screen bond is just as strong. “We’re like a real mom and daughter at this point,” Grace confesses. “We cry together, we laugh together, and we eat way too much junk food between takes!”

**Star-Studded Cast Adds More Fire**

But the drama doesn’t stop with the family. “Regretting You” boasts a supporting cast that’s sure to set hearts racing and tempers flaring. Dave Franco steps into the role of the mysterious Jonah, Aunt Jenny’s high school sweetheart, while Scott Eastwood brings his signature intensity to a character caught in the middle of the chaos. And keep your eyes peeled for Mason Thames (“How to Train Your Dragon”), who promises to steal scenes—and maybe even a few hearts.

Franco, known for his edgy roles, jokes, “I play a nice guy in this one, which is a rare thing for me.” But don’t expect things to stay nice for long. With secrets, betrayals, and forbidden love at every turn, “Regretting You” is packed with more twists than a season of “Big Little Lies.”

**Colleen Hoover’s Empire—And the Pressure to Deliver**

This is only the second of Hoover’s novels to hit the screen, but the stakes couldn’t be higher. With a book empire valued at over $10 million and a fanbase so passionate they’ve been known to crash websites on release day, the pressure to get it right is intense. “Hoover fans are next-level,” Williams admits. “We’re all feeling it. We want to honor the book, but also bring something new for the movie.”

Grace is a self-proclaimed member of the “Hooververse” herself. “I understand how much this story means to people,” she says. “I hope they love what we’ve done. There’s a lot I wish I’d done differently, but I’ll never spend one second regretting you.” The line, delivered in the trailer, has already become a rallying cry for fans online.

**Behind the Scenes: Tears, Laughter, and Real-Life Drama**

ET’s exclusive set visit revealed a cast and crew bonded by more than just their love of drama. “There’s a lot of crying on set,” one insider reveals, “but there’s just as much laughter. These actors are pouring their hearts out, but when the cameras stop rolling, it’s all hugs and inside jokes.”

Director Sarah Finn promises audiences are in for a wild ride. “This is a story about the messiness of life—the things we wish we could take back, and the love that survives even the worst betrayals. It’s raw, it’s real, and it’s going to make people feel things they didn’t know they could feel.”

**The Big Questions—And the Answers Fans Crave**

Why were Clara’s father and aunt together that night? Can Morgan and Clara rebuild trust after so much deception? And will Clara’s secret romance survive the fallout of her family’s implosion? “Regretting You” doesn’t shy away from the big, uncomfortable questions, and the answers will leave audiences talking long after the credits roll.

**Mark Your Calendars—The Drama Hits Theaters October 24th!**

With its star power, jaw-dropping plot twists, and the emotional punch only Colleen Hoover can deliver, “Regretting You” is poised to become the breakout film of the fall. Whether you’re a diehard Hoover fan or just love a good family drama, this is one movie you can’t afford to miss.

Get ready for secrets, lies, and heartbreak like you’ve never seen before. “Regretting You” is coming—and no one is safe from the truth.