A new chapter in the Emmy®-winning crime drama series, Season 4 follows Elizabeth Danvers (Academy Award® winner Jodie Foster) and Evangeline Navarro (Kali Reis), former partners who must overcome their differences to solve a mysterious crime. As the months-long winter nights begin in the fictional town of Ennis, Alaska, eight scientists who operate the Tsalal Arctic Research Station vanish without a trace. To solve the complex and enigmatic case, Danvers, the tough and uncompromising Ennis police chief, and Navarro, an ex-Marine now serving as an Alaska state trooper, must confront the darkness they carry in themselves - and dig into the haunted truths that lie buried under the eternal ice.