There is a myth that the shore to the west of Jackmouth is haunted by the ghost of a sailor named Ol' Finneas. The sea took him. His boat is empty, surely washed up somewhere, the wood waterlogged and falling apart.
The house the main five live in is named after this sailor. There is something in the attic, but nobody can figure out what. It sings hymns. Its breathing sounds like whale calls. It smells like blood and saltwater. "Somethin' ain't right about that house. Abandoned houses always abandoned for a damn good reason. I wouldn't live there, 'n' I know the Devil wouldn't live there, neither. This town's damned crazy, but ain't a soul here crazy enough to."