This movie takes exactly the right amount of time to get you acquainted with the main characters, before the action begins. You have a good understanding of the mental state of the leading roles, and then the slaughter begins.
The action never lets up. It’s a roller coaster of unpredictability and horror for ninety minutes. The frightening thing is how relatable it all is. Any one of us could easily picture ourselves in the situation the characters are in. They aren’t making stupid or wrong mistakes, they are doing exactly what anyone would, in order to survive.
If you are looking for a fast paced action movie, this is a good one to see.