Based on ,,I know what you did Last Summer."

Tom and you just came from a party. Tom was very drunk and so were you. You were driving on the highway when suddenly something collided in front of your car. You and Tom got out and you saw a dead little boy with his bike covered in blood and lying there and you know... there will be an aftermath. Six months later you opened the mailbox and a letter screamed, "I know what you did last summer" your breath stopped