Saw this recently on a blu-ray. Had seen the trailer n the concept of cult group n the theme of home invasion piqued my interest. Of course Kevin Greutert's name was the other good factor. The guy being an editor himself knows how to control his film's pacing and how to build suspense.
Most people r comparing it to The Strangers (2008) but if u read the trivia section, the script of this film was written in 2006. The other thing is Greutert was the editor for The Strangers but the real fact is The Strangers itself was a copy of the far superior French film Them aka Ils (2006).
Coming back to this film, the director managed to start the film well with the initial home invasion murders a la Halloween style n then cut back to the van kidnapping scene n the cabin in the middle of nowhere.
The settings n era were good too. The 80's era was obviously to show the lack of mobile phones n a reference to the Charles Manson cult group.
The mask-wearing villains were creepy, Stephen Dorff's role was very small. I really wanted some showdown between him n the villains.
Some viewers may complain that it would hav been better for the family to leave the cultist son but if u notice the start scene, the cultist person do come back to slaughter his family.