CREATE TABLE "table1_23958944_2" (
  "no_by_series" real,
  "title" text,
  "directed_by" text,
  "written_by" text,
  "original_air_date" text,
  "production_number" real,
  "u_s_viewers_in_millions" text
);

Question: How many different writers have written the episode with series number 8?
SQL: SELECT COUNT("written_by") FROM "table1_23958944_2" WHERE "no_by_series"=8;

Question: Who is the director of the episode titled "Hell hath no fury"?
SQL: SELECT "directed_by" FROM "table1_23958944_2" WHERE "title"='\"Hell Hath No Fury\"';

Question: Who directed the episode titled "Ghosts"?
SQL: SELECT "directed_by" FROM "table1_23958944_2" WHERE "title"='\"Ghosts\"';

Question: What's the title of the episode with production number 103?
SQL: SELECT "title" FROM "table1_23958944_2" WHERE "production_number"=103;

Question: When did the episode titled "Hell hath no fury" air for the first time?
SQL: SELECT "original_air_date" FROM "table1_23958944_2" WHERE "title"='\"Hell Hath No Fury\"';