What makes it different from others?

Most undeservingly overhyped movie of all time??

Blending excellent reporting and strong storytelling, this is a disturbing film truly stranger than fiction

The movie turns out to be a little better than the average. Starting from a romantic formula often seen in the cinema, it ends in the most predictable (and somewhat bland) way.

after reading available articles on this story and concluding the movie was pretty much following the same, it was hard to believe the sister becomes a detective at her own expense while the lazy incompetent new Zealand police does nothing even after she delivers them a case on a silver platter full of circumstantial evidence and witnesses. Finally after two yrs one detective wakes up and saves the face of the police and pushes the case forward. Recommended.