From the back cover:
The Sign of the Shadow
The Bernier family of Tampa, Florida, has been terrorized by a fire and weird graffiti. Police suspect a hate crime. The mark on the door, carved with a horn or a claw and smeared with blood and effluvia, makes Delta Green think otherwise. One of their experts says it’s the symbol of Kore, queen of the underworld, goddess of an ancient mystery cult. The sign has been seen in old tomes that had deadly hypergeometrical effects. It may be a far deeper threat than anyone suspects.
Delta Green’s agents must discover the connection between a loving family and an unnatural force that might claim them all.
“Sweetness” is a scenario of mystery and horror for Delta Green: The Role-Playing Game, available from Arc Dream Publishing.