James Frampton, an old friend of Sam and Dean, has become a witch. Now he's supposedly killing innocent people.
Did You Know?
Dean tells Sam at one point that he would like that for once "the odds be in our favor". This is a subtle reference to the Hunger Games book and film, in which "may the odds be ever In your favor" is uttered commonly before the Reaping of contestants and before the fight-to-the-death games themselves. See more
When Portia is trying to convince Sam and Dean of James's innocence, a crew member's shadow pops into, and quickly back out of, shot (right before; "I saw his thoughts"). The move is too pronounced for it to be explained away as one of the characters, who are quite still during the scene. See more