The muffled hum of the plane's engine filled the room as the clouds drifted past the window outside. Serena sat in one of the comfortable seats of the private jet that was taking her, Alex and Nathan back to Vancouver as the pilot announced the landing.

She had looked out the window, but her mind was elsewhere. She thought back to that morning, to waking in an empty bed, without Nathan's warmth beside her. He had risen early, dressed quickly and without a word, and disappeared through the adjoining room. Then when she met him at breakfast, his mood had been somber, a sharp contrast to the intimacy of the...