When it is season 10 who are the writers?
CREATE TABLE "table1_20967430_3" (
  "ep" real,
  "season" real,
  "title" text,
  "directed_by" text,
  "written_by" text,
  "original_air_date" text,
  "prod_code" text
);
SELECT "written_by" FROM "table1_20967430_3" WHERE "season"=10;