Startled, Arcturus instinctively looked down at his hands. No, the illusion was still in place. It hadn't weakened. Still, something was wrong. He just didn't know what. Was Mr Morningstar a wizard after all? He couldn't be. He'd have sent Arcturus away as soon as he'd spotted him, if that were the case.
Once you'd started lying, it was far better to keep going than to admit to it. Once you'd admitted it, there was no way out.
'My father, Mr Smith?' Said with his very best attempt at a quizzical expression, a last-ditch attempt to keep this all from going terribly wrong.