What is the production code of the episode "The Night Moves", which was directed by Patrick Norris?
CREATE TABLE "table1_17467578_1" (
  "series_num" real,
  "episode_num" real,
  "title" text,
  "directed_by" text,
  "written_by" text,
  "u_s_viewers_million" text,
  "original_airdate" text,
  "production_code" text
);
SELECT "production_code" FROM "table1_17467578_1" WHERE "directed_by"='Patrick Norris' AND "title"='\"The Night Moves\"';