August Derleth

In a small island off the American coast, the Whateleys live in an old mill where a mysterious bloody being creates an atmosphere of horror. After her parents get killed by lightning, young Susannah is sent to New York by her aunt Agatha, who wants her to avoid the family curse. Years later Susannah, now married, persuades her husband to spend a holiday in the abandoned mill. Once on the island, Susannah and Mike soon find themselves exposed to the hostility of a gang of thugs led by Ethan, Susannah's brutal cousin.

Penniless Fred Bancroft, along with his new wife Molly, visits a sinister uncle he hasn't seen in years in hopes of living rent-free in his musty, decaying mansion.

White magic practitioner Amos Wilder kills himself after securing his nephew's sworn promise to guard his body against evil spirits. The nephew must never leave his uncle's mansion, to protect the shire from the return of black necromancer Bentley, cast back to Hell by Wilder.