Pekkala must infiltrate a gang of convicts still loyal to the Tsar who, it is rumored, know the whereabouts of the precious gold. He soon learns that the best-kept secrets are those that no one even knows exist.
In the brutal frozen fortress where his survival once made him a myth, he begins to unravel the true identity of a murdered inmate, whose own mission to Siberia has lain buried for years deep within the mysterious Archive 17, where long-lost files obscure a shocking conspiracy that could decide the future of the Soviet Union itself. As more people die around him, Pekkala must decide where his true loyalties lie, or else take his place among the dead.