Reviewed by GREG KINGDirector: Michael PetroniStars: Adrien Brody, Sam Neill, Robin McLeavy, George Shevtsov, Malcolm Kennard, Bruce Spence, Jennia Baird, Chloe Bayliss.Backtrack is an atmospheric Aussie psychological thriller with supernatural undertones that borrows elements from the superior The Sixth Sense and Nicolas Roeg's Don't Look Now, amongst others. The film explores themes of grief, …