You are watching I Know What You Did Last Summer the movie produced in United States of America belongs with duration 101 Min in Category Horror,Thriller,Mystery,. broadcast at streamingjoy.com , by [ Summer Knowledge LLC ] ,[ Mandalay Entertainment ] After four high school friends are involved in a hit-and-run road accident, they dispose of the body and vow to keep the incident a secret. A year later, they each start receiving anonymous letters bearing the warning "I Know What You Did Last Summer.".