CREATE TABLE "table1_21313327_1" (
  "no_in_series" real,
  "no_in_season" real,
  "title" text,
  "directed_by" text,
  "written_by" text,
  "original_air_date" text,
  "production_code" real,
  "u_s_viewers_millions" text
);

Question: what is the No in series when Rob wright & Debra j. Fisher & Erica Messer were the writers?
SQL: SELECT MIN("no_in_series") FROM "table1_21313327_1" WHERE "written_by"='Rob Wright & Debra J. Fisher & Erica Messer';

Question: what was the name of the episode that got 3.3 (millions) of u.s viewers?
SQL: SELECT "title" FROM "table1_21313327_1" WHERE "u_s_viewers_millions"='3.3';

Question: who were the directors of the episode called "someone to witch over me"?
SQL: SELECT "directed_by" FROM "table1_21313327_1" WHERE "title"='\"Someone to Witch Over Me\"';

Question: In season number 3,  who were the writers?
SQL: SELECT "written_by" FROM "table1_21313327_1" WHERE "no_in_season"=3;

Question: when the writer is Brad Kern, how many u.s viewers (in millions) had the episode?
SQL: SELECT "u_s_viewers_millions" FROM "table1_21313327_1" WHERE "written_by"='Brad Kern';