The Kettering Incident (2016)

Anna Macy (Elizabeth Debicki) is a highly-regarded doctor working at a London hospital. Suffering from frequent headaches and other ill health, she returns to her hometown of Kettering, Tasmania, which she had left under a cloud 15 years earlier after her best friend Gillian disappeared. Upon her return, she discovers that the old animosities remain, as do the strange phenomena that accompanied Gillian's disappearance--and another young girl has just disappeared.