When convicted child killer Oswald Danes miraculously survives his own execution, the footage holds America transfixed. At the same time, people all over the world stop dying. Day after day, the phenomenon continues. And a secret British institution named Torchwood seems to hold the answers... CIA agents Rex Matheson and Esther Drummond investigate the only two surviving members of the team - Gwen Cooper, who has retreated to a remote Welsh hideaway with her husband and new baby, and the mysterious, brilliant Captain Jack Harkness. But they soon find themselves on the same side, fighting the greatest threat to humanity ever known - humanity itself. For Earth is filling up, fast. Resources are running out. And as history has shown, bad things happen when good people get desperate. Featuring all 10 episodes of Torchwoods fourth series.