However, unrest soon breaks out as local furniture maker and serial philanderer Conor Bridgeman is stabbed to death with an antique sword during a ghost-hunting party.
The owner of the house, Simon Fergus-Johnson and the rest of his family are astonished when they discover their new venture has gone horrifically wrong.
But there's just one problem; Rose is a ghost... Conor's widow Mel is stunned to learn he was cheating on her with her singing teacher, Felicity Hearn.
More secrets are spilled when it appears Conor had attempted to negotiate with Fergus to buy the haunted manor, but the discussion was fractious.
Valerie Fergus-Johnson gets in contact with Barnaby, and tells him that she was her father's carer from the age of thirteen, and that Simon had toured the world before inheriting the manor.
Mel visits Felicity, while Barnaby discovers Brendan's fixation over village matters began after Conor broke his daughter's heart - resulting in her leaving home.
Army major Ollie Tabori returns to the village of Morton Shallows, and instantly searches for Valerie.
They rush towards supposedly-haunted caves, where Pippa plans a live transmission to mark the one-hundred-and-twenty-seventh anniversary of Rose.