chunk: As the narrator reads of the knight's forcible entry into the dwelling, cracking and ripping sounds are heard somewhere in the house. When the dragon is described as shrieking as it dies, a shriek is heard, again within the house. As he relates the shield falling from off the wall, a reverberation, metallic and hollow, can be heard. Roderick becomes increasingly hysterical, and eventually exclaims that these sounds are being made by his sister, who was in fact alive when she was entombed. Additionally, Roderick somehow knew that she was alive. The bedroom door is then blown open to reveal Madeline standing there. She falls on her brother, and both land on the floor as corpses. The narrator then flees the house, and, as he does so, notices a flash of moonlight behind him which causes him to turn back, in time to see the moon shining through the suddenly widened crack. As he watches, the House of Usher splits in two and the fragments sink into the tarn.