CREATE TABLE "table1_26804862_1" (
  "series_num" real,
  "season_num" real,
  "title" text,
  "directed_by" text,
  "written_by" text,
  "original_air_date" text,
  "production_code" text
);

Question: When "the legacy" is the title what is the production code?
SQL: SELECT "production_code" FROM "table1_26804862_1" WHERE "title"='\"The Legacy\"';

Question: When harvey laidman is the director what is the season number?
SQL: SELECT "season_num" FROM "table1_26804862_1" WHERE "directed_by"='Harvey Laidman';

Question: When 3.89 is the production code how many season numbers are there?
SQL: SELECT COUNT("season_num") FROM "table1_26804862_1" WHERE "production_code"='3.89';