Something flickers across John's face: a startled, worried hesitation. He twitches that hand away as though to hide it, then catches himself. With some reluctance, he lifts the hand to let Jack have a better look.

"My finger? It doesn't hurt." He says this with full honesty. "And it doesn't seem to be getting worse." Also true. He'll simply not mention that the injury isn't recent.

Perhaps it's to his benefit that they were attacked by something capable of warping their bodies. It offers a convenient escape from some difficult questions.

"I stayed away from those creatures as best I could."