Summary
TheI Know What You Did Last Summerreboot castsRiverdaleandOuter Banksstars, with two original actors also in talks to return. The original 1997 slasher film follows four friends, two of them played by Jennifer Love Hewitt and Freddie Prinze Jr., who are stalked by a hook-wielding killer one year after covering up a car accident in which they supposedly killed a man. TheI Know What You Did Last Summerrebootwas first announced in early 2023 with Jennifer Kaytin Robinson (Do Revenge) taking over as director and co-writer.
Now, the slasher sequel has officially found its first cast members. According toThe Hollywood Reporter,theI Know What You Did Last Summerreboot has cast Camila Mendes,Madelyn Cline,Jonah Hauer-King,Sarah Pidgeon, and Tyriq Withers. Hewitt and Prinze are also in talks to reprise their roles from the original movie.

Where You Know The New I Know What You Did Last Summer Stars
Riverdale, Outer Banks, & More
It was previously reported that Hewitt and Prinze were in negotiations to reprise their roles. They starred in 1997’sI Know What You Did Last Summeras Julie James and Ray Bronson, two of the friends stalked by the hook-wielding killer and, after surviving, returned for the 1998 sequel,I Still Know What You Did Last Summer. A direct-to-video sequel,I’ll Always Know What You Did Last Summer, was released in 2006 without any of the original cast.
I Know What You Did Last Summer Reboot Can Finally Use The Book’s Original Killer Twist
I Know What You Did Last Summer changed the novel’s victim and killer, but the legacy sequel can finally do justice to the book and use them.
For its new younger stars, the upcoming reboot has cast Mendes, known asVeronica Lodge fromRiverdale, and Cline, who currently playsSarah Cameron onOuter Banks.Both Mendes and Cline are stars from teen drama series, so they should be able to make a seamless transition toI Know What You Did Last Summer, a teen slasher. The reboot has also cast Hauer-King, known for playing Prince Eric in the live-action remake ofThe Little Mermaid.

Mendes previously collaborated with director Jennifer Kaytin Robinson onDo Revenge.
Pidgeon, while lesser known, isn’t any less talented than the rest of the cast, as she is a Tony Award nominee who has played roles in Prime Video’sThe Wildsand Hulu’sTiny Beautiful Things. Withers has appeared in one episode of FX’sAtlanta. The originalI Know What You Did Last Summerwas written byScreamcreator Kevin Williamson, and they are clearly modeling the upcoming reboot after2022’sScream, featuring a combination of up-and-coming actors and original cast members.