[Narvin glances around at the dirty alleyway when they arrive. 21st century Earth really isn't much to look at from what he can observe, and he wonders what the Doctor sees in the place.

He eyebrows go up as Menzies speaks.]

You might know--? [His voice is shrill with disbelief.] How would you be on friendly terms with aliens? You're just an ordinary police detective. [So he'd assumed. But now he's reassessing.]