This Thursday, Supernatural is a repeat of episode Jus in Bello. This big turning point in the story of the show pits the boys against not only Agent Henriksen, but against an army of Lilith followers. Sam and Dean Winchester, as well as Ruby, really have their hands full. This is a very intense episode, if for some horrible reason, you missed it.
Here are some Jus in Bello tidbits, I covered, while the stuff was going down, in Season 2.