His family believed they knew what caused the mysterious mark. Then the doctors examined it carefully. A hidden truth finally came to light.

I looked at the swelling.

Then, before I touched him again, the pressure beneath Leo’s skin seemed to move back toward the place where my fingers had been.

I stared at it.

Greg stopped checking his watch.

The change in him was immediate.

Up to that second, he had been impatient, dismissive, annoyed by every extra minute we spent examining the child.