The above series is based on the 1997 movie and its source material, a 1973 novel by Lois Duncan. The show will share a premise with the movie, in which a group of teenagers is stalked by a killer a year after a fatal accident on their graduation night, but put a modern spin on the material. To elaborate this, a year after running over a fisherman and dumping his body in the water, four friends reconvene when Julie (Jennifer Love Hewitt) receives a frightening letter telling her that their crime was seen.
While pursuing who he thinks is responsible for the letter, Barry (Ryan Phillippe) is run over by a man with a meat hook. The bloodletting only increases from there, as the killer with the hook continues to stalk Julie, Helen (Sarah Michelle Gellar) and Ray (Freddie Prinze Jr.). Sara Goodman (Preacher, Gossip Girl) is writing and executive producing the show, which comes from Amazon Studios and Sony Pictures TV. Sony’s Columbia Pictures released the film, which starred Jennifer Love Hewitt, Sarah Michelle Gellar, Ryan Phillippe and Freddie Prinze Jr. and grossed $125 million worldwide. 
“We are thrilled to have I Know What You Did Last Summer with our incredible partners at Amazon Studios,” said Sony Pictures TV Studios co-president Jason Clodfelter.
Amazon just greenlit I Know What You Did Last Summer
