When Stephen finds out that Vinculus is still alive, he finds he has a definite urge to see that the man stays that way. Hence Vinculus (and occasionally Childermass by extension) finds that he has something of a protective stalker in the form of a guilt-ridden newly-crowned faerie king, and isn't entirely sure what to do about this, aside from being appreciative.

Bonus if Stephen struggles with the fear that he is turning into the Gentleman by doing this, but finds that he simply cannot watch Vinculus be harmed again.