Slumber Party Massacre

The first of 3 films in the series. Slumber Party Massacre is a pretty formulaic 80s slasher... only the killer uses a huge drill.

In all of the movies, there are social issues addressed, usually involving feminism. The film goes out of its way to put women in classically-male roles. Keep an eye on the construction crews, the telephone repairman, etc... All sorts of little touches like that can be seen througout the series.