Nathan is alive. He doesn’t know how, and he doesn’t know why, but he needs answers. Answers are hard to come by in the ancient labyrinth of stone corridors beneath the mountain. All he can find are references to Trials and something called The Beast. But Nathan knows one thing for sure: he isn’t alone. The mysterious mountain is the least of Nathan’s concerns, however. The Northborns are back in the Colony, and each day brings them closer to an execution at the hands of the Council. But saving his family won’t be so simple this time. The Colony has taken a turn he never expected – a shift which will force him to decide between his family, his friends, and his ideals.