From the publisher:
"Inside Forsaken Rites: The Supernatural Sourcebook, you will find:
New descriptions of Incarnate, ghosts, demons, and other supernatural beings.
An extensive grimore of rituals.
A history of magic.
Several new magical organizations with Credential skills, trainings and pulling strings.
New rules for using rituals, exploring supernatural sites and battling corruption.
A full adventure investigating a supernatural menace."