I Know What you did Last summer by Lois Duncan

        Lois Duncan is a fantastic writer! I know what you did last summer is a movie and a best selling novel. After winning a beauty pageant, Hellen along with Julie, Barry, and Ray go out of town to celebrate. Returning in Barry's new car, they hit and apparently kill a man. They dump the corpse in the ocean and agree to never discuss again what had happened.
        One year later, Julie is returning home from college. She has not spoken with Helen, Barry or Ray since the accident. Upon returning home, Julie receives a letter that says "I KNOW WHAT YOU DID LAST SUMMER!" Panicking, Julie goes to see Helen at Shivers, a department store where she works. Julie shows Helen the letter and they decide to visit Barry. After going over the incident, Barry accuses Max. The trio go to see Max but Barry insists on going in the factory alone. Barry persuades Max to go into the back room and angrily attacks him, telling Max he should keep his mouth shut. Julie finds Ray working on the docks. Ray tries to make up with Julie but she runs off. Inside the factory, Max is brutally murdered with a meat hook to his neck by an anonymous figure. The killer attacks Barry next, running him over with his own car. The killer is shown wearing a black raincoat and his hook.
        At Helen's home that night, the killer breaks in, hiding in her closet. The next morning, Helen wakes up with the crown on her head with most of her hair cut off to bits with "SOON" written in lipstick on her mirror she screams out in horror and smashes the mirror. Julie gets a call from Barry, who tells her to come to Helen's. On the way, Julie hears rattling in her trunk. She opens the trunk to find it full of live crabs and Max's dead body. She shuts the trunk, runs to Helen's and brings her and Barry to her car, but the body and crabs have disappeared. Julie is convinced the killer took the body and that they are not safe. Later they run into Ray back at the house, in which Barry punches Ray in the face, fell to the ground and tells them he got a letter. Julie decides to see Missy again while Helen and Barry watch each other's backs at the parade. 
        At the Croaker pageant, Helen sees Barry murdered by the killer during a performance of Irene Cara's "Fame" by one of the beauty pagent entrants who had entered the year before. However, neither the killer nor the body are found afterwards. A police officer drives Helen home. The killer lures the cop into an alley and kills him after tricking him into believing that his car has broken down. Helen runs to the store where Elsa is working, but the killer finds both of them and, whilst Elsa is locking the back door, he kills Elsa. Helen manages to elude the killer by jumping out of the window into a dumpster and she flees through the back alleys to the parade. Helen then turns around and is then stopped by the killer who shoves her into a stack of tires and slashes her to death, her screams are to no avail as the noise of the parade drowns them out. 
        If you like this story so far make sure to check the book out! This book is scary and recommended for readers who don't mind gruesome horror.