Who directed the episode with a production code 3ADK-03?
CREATE TABLE "table1_12033013_3" (
  "no_in_series" text,
  "no_in_season" text,
  "title" text,
  "directed_by" text,
  "written_by" text,
  "original_air_date" text,
  "production_code" text
);
SELECT "directed_by" FROM "table1_12033013_3" WHERE "production_code"='3ADK-03';