"Yes. Simpler. I guarantee it." Since he is a ghost in this world and no amount of checking his identity will fix that problem. Best of luck to anyone who tries.

"You'll tell them you noticed something odd in the light. A blemish that led you to look closer. That's when you realized he was wearing the mask. You ripped it off, saw him for who he was beneath, and rightly laid into him for the deception. He fought back and you were forced to break his nose. If any of the witnesses insist that there was a man involved, well, you know how chaotic things can become in a fight."