'I Know What You Did Last Summer' director shares Brandy's reaction to the trailer

If you've seen I Know What You Did Last Summer, you know that the post-credits scene not only features a special cameo but sets up a potential sequel. 

That's right, Brandy reprises her role as Karla Wilson alongside Jennifer Love Hewitt's Julie James in the legacy sequel. "I always knew I wanted Brandy in this movie. There was no movie without Brandy. But I think you don't want to just shove someone into a story," director Jennifer Kaytin Robinson expressed to PEOPLE. "To me, the fun of bringing back this franchise is kind of following the rules of the first two movies. So it always felt the most right to bring Brandy back to set up a sequel that she would then be in."

When five friends inadvertently cause a deadly car accident, they cover up their involvement and make a pact to keep it a secret rather than face the consequences. A year later, their past comes back to haunt them and they’re forced to confront a horrifying truth: someone knows what they did last summer…and is hell-bent on revenge. As one by one the friends are stalked by a killer, they discover this has happened before, and they turn to two survivors of the legendary Southport Massacre of 1997 for help.

She continued to explain, "You needed a thrust to get them back together, and the events of this movie is that thrust that then pulls them back toward each other." As for Hewitt, she shared, "We just kept looking at each other. It was just really funny. We were just so happy to be back together. I think she really felt like I did, just so deeply grateful for this opportunity. It's just so fun."