Question: What was the production code of the episode no. 55 in the series?
SQL: SELECT "Production code" FROM "1-27776266-1" WHERE "No. in series" = 55.0;

Question: What was the production code of the episode with an audience of 14.79 million in the US?
SQL: SELECT "Production code" FROM "1-27776266-1" WHERE "U.S. viewers (million)" = '14.79';

Question: Who directed the episode with an audience of 14.11 million?
SQL: SELECT "Directed by" FROM "1-27776266-1" WHERE "U.S. viewers (million)" = '14.11';

Question: What was the title of the episode with a production code of 3X6404?
SQL: SELECT "Title" FROM "1-27776266-1" WHERE "Production code" = '3X6404';