The Stranger (out Oct 6) is an Australia drama loosely based on the elaborate police sting which led to the confession of the man who killed 13-year-old Daniel Morcombe in 2003. It takes a narrow approach (focused on the sting and nothing else) and deftly highlights the emotional toll on the undercover detective (Joel Edgerton) forced to befriend the suspected killer (Sean Harris) over several months. Grade: B+.