On this episode of Supernatural…
Sam and Dean discover a group of orphans are being trained by a former hunter Victor.
One of the hunters is Krissy Chambers who Dean met before.
They are avenging their parents deaths at the hands of vampires.
Sam and Dean discover the young hunters are being manipulated by Victor who set up the murders in order to make them better fighters.
Krissy spares Victor who then kills himself.
She and the other two agree not to hunt unless monsters come to them.
Sam and Dean head back out to work on the trials and close the gates of hell.