The Order of the Sacred Deep

From publisher blurb:

The Order of the Sacred Deep is a religious organization designed to interact with your player characters in your existing setting. The resource is system neutral. Inside you will find suggestions for how to place the group, and what people know about them. You get a crisp summary of facts about the group's beliefs and organization. This resource provides ways to increase or decrease the threat they pose, sample members of the organization, a list of adventure hooks, and more.