CREATE TABLE "table1_18268826_1" (
  "no_in_series" real,
  "no_in_season" real,
  "title" text,
  "directed_by" text,
  "written_by" text,
  "original_air_date" text,
  "production_code" text,
  "u_s_viewers_million" text
);

Question: What's the series number for the episode titled "Hunted"?
SQL: SELECT MIN("no_in_series") FROM "table1_18268826_1" WHERE "title"='\"Hunted\"';

Question: How many episodes by different writers were seen by 3.24 million people in the US?
SQL: SELECT COUNT("written_by") FROM "table1_18268826_1" WHERE "u_s_viewers_million"='3.24';

Question: How many different people directed the episode titled "Born under a bad sign"?
SQL: SELECT COUNT("directed_by") FROM "table1_18268826_1" WHERE "title"='\"Born Under a Bad Sign\"';

Question: What's the season number of the episode viewed by 3.19 million people in the US?
SQL: SELECT MAX("no_in_season") FROM "table1_18268826_1" WHERE "u_s_viewers_million"='3.19';

Question: Who's the writer of the episode seen by 3.25 million people in the US?
SQL: SELECT "written_by" FROM "table1_18268826_1" WHERE "u_s_viewers_million"='3.25';

Question: Who directed the episode seen by 3.93 million people in the US?
SQL: SELECT "directed_by" FROM "table1_18268826_1" WHERE "u_s_viewers_million"='3.93';