CREATE TABLE "table1_18102421_2" (
  "no_in_series" real,
  "no_in_season" real,
  "title" text,
  "directed_by" text,
  "written_by" text,
  "original_air_date" text,
  "u_s_viewers_millions" text
);

Question: How many millions of U.S. viewers watched the episode directed by Allison Liddi-Brown? 
SQL: SELECT "u_s_viewers_millions" FROM "table1_18102421_2" WHERE "directed_by"='Allison Liddi-Brown';

Question: What number episode in the season was titled "Dead on Arrival"?
SQL: SELECT MAX("no_in_season") FROM "table1_18102421_2" WHERE "title"='\"Dead on Arrival\"';

Question: What was the title of the episode that had 13.82 million U.S. viewers? 
SQL: SELECT "title" FROM "table1_18102421_2" WHERE "u_s_viewers_millions"='13.82';