Ryan Phillippe starred in the 1997 film I Know What You Did Last Summer.
I Know What You Did Last Summer . The film stars Jennifer Love Hewitt , Sarah Michelle Gellar , Ryan Phillippe and Freddie Prinze , Jr. , with Anne Heche , Bridgette Wilson , and Johnny Galecki appearing in supporting roles . Ryan Phillippe . After appearing as Billy Douglas on the soap opera One Life to Live , he came to fame in the late 1990s with starring roles in a string of films , including I Know What You Did Last Summer , Cruel Intentions , and 54 .