It's competently put together, but crashingly uninteresting. No characters evoke empathy or even sympathy. The retelling of the story beginning around the middle is briefly diverting but by a couple of minutes we've picked up on the game. If this is the case of a successful thriller, then horizons have shrunk. The best plot twist never happened! When the son Conner (spelling?) said early on that his fight involved two guys ... and the film ends with the two missing kids encountering a stranger ... I expected to find that Conner was behind the kids' kidnappings. Too bad the thing is more interested in "twists" than any characters whose twists we might care about.