Dangerous Encounters of the First Kind (1980)

I love the heroine of this movie. She, a beautiful teen-age sister of a cop, is in fact a fiery, sadistic psychopath who dominates hapless (and spineless) threesome of students and forces them to participate in her reckless criminal scheme.

Even though the heroine is totally amoral, and sadistic etc., we can't but root for her because she is fearless and puts up a lone fight against..., against everything. She is motivated by dark and formless anger, and she controls (or tries to control) three students through fear and greed. This relationship between the girl and the threesome is the most interesting aspect of the film.

Their dangerous game leads to the involvement with organized crime (the triad?) and to the dire conclusion. The last twenty or so minutes of the film is truly gruesome.

The other characters in film are pretty two-dimensional --- the villains are mere killing machines, and the cop, the brother of the heroine, is also rather stereotypical loner cop. But the dangerous and out-of-control spiral of the four main characters is riveting to watch.