1.

mysterious or suggestive of the supernatural (PARAGRAPH 1):

SPOOKY

2.

belonging to the Middle Ages (PARAGRAPH 2):

MEDIEVAL

3.

enclosed passageway with rooms usually opening onto it (PARAGRAPH 3):

CORRIDOR

4.

utility system to warm a building (PARAGRAPH 3):

HEATING

5.

having the back and shoulders rounded, not erect (PARAGRAPH 4):

STOOPED

6.

becoming endangered (PARAGRAPH 5):

THREATENED

7.

locked up or confined as in a jail (PARAGRAPH 7):

IMMURED

8.

pursue or follow constantly (PARAGRAPH 8):

HAUNT