CREATE TABLE "table1_27397948_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: List all titles with a 57 series number.
SQL: SELECT "title" FROM "table1_27397948_2" WHERE "no_in_series"=57;

Question: What's the highest season number with a series number of 47?
SQL: SELECT MAX("no_in_season") FROM "table1_27397948_2" WHERE "no_in_series"=47;

Question: Who was the writer for season episode 7?
SQL: SELECT "written_by" FROM "table1_27397948_2" WHERE "no_in_season"=7;

Question: How many millions of US viewers were there for the episode "No Safe Place"?
SQL: SELECT "u_s_viewers_millions" FROM "table1_27397948_2" WHERE "title"='\"No Safe Place\"';