An old man, dressed only in a white nightgown, approaches Fanny and Brix's house at night. There he suffers a dizzy spell after trying in vain to set the house on fire. He tells cryptic things to Brix, who has rushed to his aid, while staring at a skylight. Brix follows the gaze and finds a child's skeleton under the wooden floorboards. He calls Anna Janneke and asks her to take care of the completely distraught Fanny. As he makes his wayto solve the mystery of the dead child, things happen in the house that can no longer be explained in a natural way. In the course of his investigation, Brix meets Merle, the old man's granddaughter, who will never leave his side again. Little by little they uncover the dark past of the house. While Merle is trying with all her might to get there, Janneke is trying desperately to stop Brix from bringing the girl into the house.