Sobrenatural Temporada 8 Episódio 20

Concerned about the physical toll the second trial took on Sam, Dean benches his brother from hunting until he heals up. So, when geektastic hacker Charlie stumbles upon a case and finds the boys, Dean decides its time to teach Charlie how to be a hunter-in-training. While happy to see her highness, the boys suspect Charlie is hiding something; a secret that could get her killed.