Lancelot's brow furrows slowly at Childermass' words, less at the revelation that the man knows who he is (he hasn't kept quiet that he's a Guardian, after all, he thinks he's reasonably well recognised by now) and more at the suggestion inherit in what Childermass says. That he has some preconceived ideas based wholly on his affiliation.

He presses his lips into a thin, unhappy line.

"The fact that something is being learnt is not separate from harm being done," he says finally. "Nor is it the same thing, If you are content to leave a human child in the hands of the fae that is your prerogative, but I intend to see the chid returned to its family."