The Haunting of Gillespie House by Darcy Coates

Elle is thrilled to spend a month minding the beautiful Gillespie property. Over an hour's drive from the nearest town, the aging mansion is ideal for someone seeking solitude. But as she explores her new home, Elle makes a startling discovery: there's a graveyard nestled deep in the woods, containing a generation of the house's residents. . . all who died the same year.

Then things start to go very wrong, very quickly.

There are skittering noises inside the walls. . . slamming doors. . . whispers in the night. . . a locked room. . . and a horrifying mystery that wants to be solved. As she investigates further, Elle begins to unravel the property's dark and dangerous history. At its center is Jonathan Gillespie, a tyrannical cultleader and the house's original owner. And as Elle soon learns. . .

Just because he's dead, doesn't mean he's gone.