On Valentine’s Day in 1900, a group of schoolgirls went to picnic at Hanging Rock in Victoria, Australia. Some of them never came back.

There is a pervasive myth that the events that unfold in Peter Weir’s classic 1975 mystery film occurred in real life. It is entirely a work of fiction, but much like the characters’ uncertainty about what is really happening within the narrative itself, the film elides definitive interpretation or full clarity as to what is real and what is only imagined. The dreamlike nature of the cinematography and the otherworldliness of many actors’ performances soon lulls the viewer into a nebulous world that refracts reality and hints at the darkness lurking in its lesser-known corners.

The first in a string of genre-defining classics in Weir’s filmography (Witness, Dead Poets Society, The Truman Show), Picnic at Hanging Rock is a truly unique and deeply unsettling portrayal of paranoia and dread.