Arkangel

A Vatican archivist's murder unveils a conspiracy dating back to the Russian Tsars, linked to a secret within the Golden Library of Tsars. Before his death, he sends a coded warning about a looming threat. Sigma Force is called to investigate, racing through the Arctic to uncover truths that could spark global conflict. Amidst internal strife following an attack on their agency, Commander Gray Pierce and his team must navigate a resurgence of tensions between the Russian Orthodox Church and the Vatican, while seeking a lost civilization that holds the key to either salvation or destruction.