CREATE TABLE "table1_24319661_5" (
  "no_in_series" real,
  "no_in_season" real,
  "title" text,
  "directed_by" text,
  "written_by" text,
  "u_s_viewers_million" text,
  "original_air_date" text,
  "production_code" text
);

Question: Who directed episode 53 in the series?
SQL: SELECT "directed_by" FROM "table1_24319661_5" WHERE "no_in_series"=53;

Question: What as the production code for the episode directed by Robert Duncan McNeill?
SQL: SELECT "production_code" FROM "table1_24319661_5" WHERE "directed_by"='Robert Duncan McNeill';

Question: What episode number of the season had BCW410 as a production code?
SQL: SELECT "no_in_season" FROM "table1_24319661_5" WHERE "production_code"='BCW410';

Question: What episode number in the series had 2.77 million U.S. viewers?
SQL: SELECT MAX("no_in_series") FROM "table1_24319661_5" WHERE "u_s_viewers_million"='2.77';