In 1959, a group of hikers were found dead in mysterious circumstances in a remote pass of the Ural mountains – so far so true. Conspiracy theorists have put their deaths down to everything from alien encounters to government plots. If director Renny Harlin (Deep Blue Sea) had based his film on just one of these theories, he could have made a half-decent teen thriller. Unfortunately he went for a mashup of them all. The result is an hour of waiting for something to happen followed by 30 minutes of silliness. In Harlin's film, five modern-day students meet grisly ends while filming a documentary investigating this mystery. The students display a remarkable presence of mind and keep their cameras rolling during everything – even while fighting off teleported mutant humans.