Ianto rubs a hand over his neck self-consciously as Jack eyes it, then frowns, fingers going back to one particular spot that shouldn't feel as smooth as it does. He pulls the sheets down to confirm his suspicion and he's correct - the vampire bite scar on his thigh is missing just like the ones on his throat were.
"You may be right. My scars are gone, and if they didn't happen in a real environment it makes sense that they wouldn't exist on my real body." Once he would have thought about the possibility of escape now but he's long past any serious consideration of that.