A seemingly ordinary family harbors a dark secret: they are vampires. They choose not to drink blood despite their natural cravings, but one day, their truth comes to light.

Biographer Margaret Lea travels to the isolated rural mansion of the famous writer Vida Winter, who asks her to write her biography. Although initially she is reluctant, as Vida is known for constantly distorting the facts of her life, Margaret soon becomes fascinated with the story of a dark childhood, a disturbing tale that leads her to finally confront the traumas of her own past.

England, 1538. When her Catholic priory is destroyed by agents of the crown, a sheltered young nun plagued by visions embarks on a dangerous journey in search of sanctuary, accompanied by her unyielding Reverend Mother.