 By reading the book , Gray learns that Léone is a victim of a Vampyr . Vampyrs can force humans into submission . The village doctor visits Léone at the manor , and Gray recognizes him as the old man he saw in the castle . The doctor tells Gray that a blood transfusion is needed and Gray offers his blood to save Léone . Exhausted from blood loss , Gray sleeps . He wakes sensing danger and rushes to Léone , where he surprises the doctor as he is attempting to poison the girl . The doctor flees the manor , and Gray finds that Gisèle is gone . Gray follows the doctor back to the castle , where Gray has a vision of himself being buried alive . After the vision subsides , he rescues Gisèle but the doctor escapes . The old servant of the manor finds Gray 's Vampyr book and discovers that a Vampyr can be defeated by driving an iron bar through its heart . The servant meets Allan Gray at Marguerite Chopin 's grave behind the village Chapel . They open the grave and find the old woman perfectly preserved . They hammer a large metal bar through her heart , killing her . The village doctor is hiding in an old mill , but finds himself locked in a chamber where flour sacks are filled . The old servant arrives and activates the mill 's machinery , filling the chamber with flour and suffocating the doctor . The curse of the Vampyr is lifted and Léone recovers . Gisèle and Gray cross a foggy river by boat and find themselves in a bright clearing . 
