Nora calls Vee to tell her about her date with Patch, and Vee again warns her that she thinks Patch was her attacker.
While telling Vee about the scars on Patch's back, Nora realizes they remind her of the scars painted onto an image of a fallen angel that adorned the side of her car on the Archangel.
Nora hops online and looks up fallen angels. She finds a website explaining that after the creation of the Garden of Eden, angels were sent to earth to watch over Adam and Eve, but some abandoned their task to search for power, money, and human women.
Those angels, a.k.a. fallen angels, were stripped of their wings and banished to earth forever, where they tempt humans to evil and take control of human bodies during Cheshvan.
If all that's not freaky enough, she also reads that "fallen angels who have a sexual relationship with a human produce superhuman offspring called Nephilim" (19.49). And the Nephilim are an evil race.