A businessman named Soren Lehmann bought the house at a bargain price, ignoring rumors of a haunting. He rented it to a family, the Natales, whose lives were quickly ruined by the house. The father, Severano, suffered a catatonic "accident," and the mother, Fabrizzia, eventually admitted herself to a psychiatric ward claiming a ghostly figure was hunting her.
The story related to (often formatted as a scenario title) refers to a modern horror investigation for the Call of Cthulhu tabletop role-playing game . It is a reimagined homage to the classic introductory adventure "The Haunting," featuring the infamous Walter Corbitt. The Core Premise 246_Corbitt_Street.zip
* 246 Corbitt Street is an investigative scenario for 4 or 5 players set against a Mythos backdrop. Its design allows the players' Shadowlands Games Add Ons | Scions of the Dark Goddess - BackerKit
The "zip file" likely contains the digital handouts and scenario documents for the game, which lead to a final showdown where the players must confront the malevolent force in the basement.