Angel.
Oh, yeah. Rituals are common. Yet when rituals occur, usually a streak of bad is quick to follow. Thus far we've seen nothing out of the norm. Just the usual demon attacks and stuff. My concern is that it is something that will happen again, in which case we need to pick up the right lead to stop it from happening again.
The bones can be identified, if the right person takes a look at them. I didn't do it, personally. I'm just going off what I was told.
[ooc: That's okay! I'm not too sure on what's going to be happening next either, since The Master is behind the crazy. I'm mostly having Sam do what he WOULD do in a situation like this: investigate.]