In a moment that felt like a scene straight out of a movie, Buffy the Vampire Slayer star Sarah Michelle Gellar made a surprise appearance at a special screening of the 1997 cult classic I Know What You Did Last Summer — and the audience was in for more than just a nostalgic horror thrill.

The unannounced visit came as part of a fan event celebrating the iconic slasher film, and the crowd erupted into cheers when Gellar stepped into the theater. Dressed casually but glowing with excitement, she took to the front of the room to thank fans for their enduring love of the film.

But the biggest twist of the night? Gellar spotted her former nanny — sitting right there in the audience. “Oh my God!” she exclaimed in disbelief, visibly touched by the surprise reunion. The two exchanged laughs and warm words, adding an unexpectedly emotional layer to the evening.

The wholesome moment has since gone viral online, with fans praising Gellar for staying grounded and gracious despite her fame. It’s not every day a horror icon turns a spooky screening into a heartwarming reunion. But then again, that’s the magic of Sarah Michelle Gellar.