Written by Derek Pearcy, published by Steve Jackson Games in 1996, and based on the French RPGs In Nomine Satanas/Magna Veritas by Croc, this is the game of Divine/Infernal warfare under the surface of the modern world.
I've written only a small amount of In Nomine material. The largest single published chunk can be found in the Ethereals chapter of the Liber Servitorum, but I have little bits and pieces scattered through other volumes. I've also edited two In Nom books -- Superiors I and You are Here.
Below you'll find some excised Servitorum material. I know the selection is a little skimpy, but I haven't done enough writing for the system to have a lot of rejected material yet. <grin>