Lake Mungo (2009)

Synopsis
Sixteen-year-old Alice Palmer drowns while swimming in the local dam. When her body is recovered and a verdict of accidental death returned, her grieving family buries her. The family then experiences a series of strange and inexplicable events centered in and around their home. Profoundly unsettled, the Palmers seek the help of psychic and parapsychologist. He discovers that Alice led a secret, double life. A series of clues lead the family to Lake Mungo where Alice's secret past emerges. Lake Mungo is a mystery, a thriller and a ghost story weaved into a 'documentary' that illustrates how the dead can forever haunt the living. ~sxsw.com