Incident at Devils Den: A True Story, by Terry Lovelace

Vivienne and Ryan Williams couldn’t be happier after buying their dream home from a mysterious man named Josh in a beautiful California suburb. Their newfound paradise soon turns into a living nightmare as Josh, still strangely attached to the house, suddenly appears after they move in to help fix up certain parts of the home. When his erratic behavior turns to obsession for Vivienne, the young couple soon find themselves caught up in a volatile confrontation that threatens to destroy everything they hold dear.