Criminal Minds2005

Alex Blake:
I know that look. The wheels are turning.

David Rossi:
I've seen this before. Muzzle flash burns. We'd occasionally see this on POWs in Vietnam.

Alex Blake:
So someone held a gun to his head and repeatedly fired blanks.

Dr. Spencer Reid:
It's incredibly risky, especially considering the margin of error when holding the barrel of a gun to someone's temporal bone. The discharge alone can cause a skull to shatter.

David Rossi:
Which means not only did this person want to put the fear of god into Gavin, but he knew exactly how to do it without killing him.

Alex Blake:
This poor kid was tortured.

Dr. Spencer Reid:
Or trained. What if whoever did this wanted to make sure if he got caught, he'd never talk?