CREATE TABLE table_2468961_8 (written_by VARCHAR2, directed_by VARCHAR2, original_air_date VARCHAR2)

Name who wrote the episode directed by patrick duffy airing on november 7, 1997
SELECT written_by FROM table_2468961_8 WHERE directed_by = "Patrick Duffy" AND original_air_date = "November 7, 1997"
SELECT "written_by" FROM "table_2468961_8" WHERE "November 7, 1997" = "original_air_date" AND "Patrick Duffy" = "directed_by"