Three schoolgirls and their teacher walk up a rock in 1900 and never come down. It never happened. Australia remembers it anyway.

Episode 6 goes up the Rock. Joan Lindsay, who kept no clocks and dreamed the novel in two weeks. Peter Weir, who hid an earthquake under the picnic and did everything in his power to hypnotise you away from wanting an answer. The final chapter that solved the mystery, cut before publication. And the older, real story at Hanging Rock that the film never touches.