Much like Part 1 draws heavily from The First Evil, Part 3 takes inspiration from The Betrayal. As Nora Goode watches the Fear Mansion burn to the ground, her mind drifts to how the feud between the Goodes and the Fears first began. In 1692, Susannah Goode is accused of being a witch by the family of her beloved Edward Fier. Will he save her, or be her doom?
Part 3 sees a role reversal between the Goodes and the Fiers, with the Goode family being the accusers versus being the accused. Both the book and Part 3 feature soil issues due to the supposed witch, secret meetings between forbidden lovers that get interrupted, and a potential marriage between a Fier and a Goode that doesn't work out. Solomon Goode and his family also end up being secret warlocks, with access to a secret room for their evil deeds.
