Perhaps Scorpius should wait here until they are finally able to leave. Whatever is going on here, he doesn't trust this Eyvind one bit. His impression of the voice, which at least didn't lie to him, doesn't match the man behind it; he can influence people with a mere flick of a finger, and he's clearly making good use of that ability. Moreover, he has somehow persuaded Harry to approach him in a friendly manner, despite the fact that he too has felt Eyvind's presence in an unpleasant way.