SCHEMA:
CREATE TABLE table_2468961_8 (written_by VARCHAR, directed_by VARCHAR, original_air_date VARCHAR)
USER:
Name who wrote the episode directed by patrick duffy airing on november 7, 1997

QUERY:
SELECT written_by FROM table_2468961_8 WHERE directed_by = "Patrick Duffy" AND original_air_date = "November 7, 1997"