User blog comment:Bob the Wikipedian/The Verrat, the Reapers, and the Grimms/@comment-1966944-20120423061612

I wouldn't say it was a plot flaw. Nick, like the rest of us, are learning about Grimm history and mythology. We know at this stage a Grimm's duty is to kill creatures. Now is that a duty to the Grimms themselves or another entity? It seems that entity may be one or all of the Seven Royal Families alluded to. We also now know there is a resistance against these families, so the Wesen "resistance fighters" are being tracked down and killed by the Verrat under the orders, we presume, of the Royal families. So now there is something in common between the Grimms and the Royal families, they both want and/or need these creatures eliminated. So apparently some type of truce or arrangement was made to cooperate in accomplishing that goal. What else besides assistance in killing the Wesen the Grimms may receive with this arrangement is, as yet, unknown.