The second doorway finished tearing itself open with a low grinding shudder that shook dust from the ceiling. The stone split perfectly down the middle, and a seam of bright silver light spilled across the floor in a clean line. It looked like someone had drawn a glowing path straight into the earth with a molten blade. The floor inside the new passage lit up panel by panel. Each rune flared to life as though waking from a thousand-year sleep. Of course the new tunnel was glowing. Of course it was for me. Why would anything in here ever chill? I stared at the brightness and sighed. “Oh good. Another tunnel that wants to eat me.” Nathan stepped in front of the opening so fast I did not even see him move. One second I had a view of the glowing hallway. The next his broad shoulders fill

