Jay hadn't traveled this far in months. The jet hummed beneath him, a steady sound that failed to drown out the noise in his thoughts. He sat by the window, staring out at the endless sky, a tablet balanced on his lap. Every few seconds, he'd glance at the screen showing his destination time—still hours ahead. His mother had summoned him. No one summoned Jay unless it was urgent.

He had a rough idea why. The last time they spoke, she hinted at her desire for grandchildren, her voice laced ...