Here's one I haven't run into before. I see light coming out from my model's (Michael 3) mouth and nose. Perhaps this has happened before, but this is the darkest lit environment I have tried (a night setting), so the problem is clearly evident.

I turned off all the lights and the light coming out of his mouth and nose disappeared, which leads me to believe that the light from the external lights is somehow penetrating the hair and skull of my model and coming out the mouth and nose. Is this a true assessment? How can I fix this? Thanks.