Call of Cthulhu RPG 7th Ed: Dead Light & Other Dark Turns - Rules of Play says:
Dead Light and Other Dark Turns contains two scenarios for Call of Cthulhu 7th Edition dealing with the theme of roadside adventure, along with six story seeds for the Keeper to expand and develop. In the classic Dead Light scenario, now revised, a chance encounter with a distressed young woman leads the investigators into the hideous aftermath of a crime gone terribly wrong. While in the brand-new Saturnine Chalice scenario, seeking help from a nearby homeowner after their vehicle runs out of gas traps the investigators in a house where nothing is quite what it seems.