A thriller involving an ongoing unsolved mystery in Alaska, where one town has seen an extraordinary number of unexplained disappearances during the past 40 years and there are accusations of a federal cover up.

A detective hunts down a killer using video footage shot by the victims of a massacre at an abandoned gas station.

In Kyzl Kum Desert, Central Asia, a team of explorers learn of a newly discovered cave system and set out on an expedition to explore it. However as soon as they begin the descent, it quickly becomes clear that this was a secret that should have remained below the surface as members of the team find themselves caught in a desperate fight for their lives.