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After defeating the man in the Black Robe, Serafina comes out of the shadows of the basement and into the open. From now on, the girl is a full-fledged defender of the estate. However, the death of Mr Thorne, the former owner of the Black Robe, has brought a detective to the estate. His methods of investigation and questions seem suspicious to everyone. What is the man up to and will Seraphina be able to cope with the new danger that threatens all the inhabitants of Biltmore?