In 1850, Captain Charles Boone inherits his wealthy cousin's estate and the family relocate to small-town Maine; Charles begins a dangerous journey of self-discovery.

After a child in town dies of a mystery illness, hysterical townsfolk demand that Charles dig up his cousin's grave; Charles refuses, but opens the grave in private and is shocked by what he finds.

Charles keeps hearing rats behind the walls, despite assurances there are none; his search for answers leads to an insane asylum where his worst fears are realised.

Charles prepares to commit himself to the asylum for treatment but Tane finds something disturbing that may reveal Chapelwaite's secrets; a creepy cadre of emaciated Acolytes arrive with a message.

The mysterious Jakub lures Charles to Jerusalem's Lot and he discovers that his insanity is connected to an ancient book; the children are stunned and betrayed when Loa finds Rebecca's secret writings about the Boone family.

Charles is overwhelmed with grief and anger after his family is dealt a devastating blow; Stephen and Uncle Phillip come to Charles with a surprising proposition.