That Summer Feeling Is Gonna Haunt You: I Know What You Did Last Summer (Jim Gillespie, 1997)

We used to be best friends. We used to be a lot of things.

We children truly did not know what we had in Sarah Michelle Gellar. 

If Heathers was the root of ‘90s teen horror, I Know What You Did Last Summer is its full flower. It came out in 1997, a year after Scream, and was one of screenwriter Kevin Williamson’s two-count-em-two big follow-ups that year, along with Scream 2. (To give you a sense of just how ho…