Heathers

Made in 1989, Heathers is a cult movie in which three out of the four girls in a trend-setting clicque at Westerburg High are called Heather. They play croquet with each other and enjoy playing tricks on their classmates.

Veronica ([Winona Ryder]?) is the fourth member of the privileged circle. She dislikes her friends, but stays in the group.

Veronica meets a new pupil, a motorcycle-riding rebel, Jason Dean or 'JD', who seems to offer a way out of Westerburg's social system. But JD ([Christian Slater]?) is a teenage psychopath, and Veronica takes a long time to recognise this fact. When she muses that things would be better if the principal Heather were dead, JD makes that happen. JD's father, incidentally, is a building magnate who gets his own way by arranging for target sites which he wishes to develop to accidentally get blown up.

Heathers is a black comedy exploring teenage coteries as a model for satirising life after high school.