Nathan’s POV

We’ve been flying back and forth on the grid for 1 ½ hours. We haven’t seen a single clue of where they could be. It’s starting to get dark. I can see the brilliant orange and pink hues of sunset starting to appear across the sky. They are a beautiful warning that we are running out of time for today's search. How can something so spectacular bring me such a feeling of dread in the pit of my stomach?

“Dr. Michaels, we have about 30 minutes before we have to call off the ...