3x5 - Beauty and the Beast

Vincent is haunted by dreams of heavily-snowing winter, and no wonder: Gabriel sends an assassin named Snow to eliminate him, leading him to lead Snow away from the "World Below" inhabitants when Snow finds the tunnels. Meanwhile, Joe has become acting district attorney in the wake of Moreno's exposure and murder and is free to continue his own investigation. Snow dies in a cave-in in the deepest tunnel.