Why do you think the Kesses (and presumably their investigators) are not persuaded by the face in the third shot?
To me, it appears that the individual is wearing a ball cap turned backwards. MOO
It is useful to block off parts of the face in blow ups if I block out the features I am looking fpr the "bun" (or helmet back) and think I may be able to just see it though of course am unsure. If he is turned it should not be visible.