So. Stupid question, but what is the silence? I mean at first we're led to believe it's a species, but then in let's kill hitler we're told point blank that they're not a species but a religious order of some sort. So what exactly are they and why do they look like they're all part of the same species?
Or is it something simple like they're some sort of foot soldiers that are called the silence, but all they are are just footsoldiers for the religious order.