Fortress (1985)

Fortress is an Australian film made in 1985. Rachel Ward stars as Sally, a school teacher in a rural community. One day, she and her class are abducted by four men wearing character masks, all armed with shotguns. What follows is their daring attempts at gaining freedom, and the realization that sometimes, the borderline between victim and attacker can be easily crossed.

Loosely based on the 1972 Faraday, Victoria abduction.