User blog comment:Zathronas/Speculative author: Where are the Grimm?/@comment-3146930-20140914162543/@comment-24218038-20140914190418

There's a dichotomy between what is said and what is shown. Even Monty has said they needed to make the grimm more credible.

Your not seeing the show from a story perspective. One of the basic principle in a story is that if you are going to use a gun in act 3, you need to show it in act 1. They did so with the CCT tower and has done so with the Grimm.

The only mistake they did was not establish them as a threat from the start.