Question: How many times did episode 6 originally air?
SQL: SELECT COUNT("Original air date") FROM "1-21550897-1" WHERE "#" = 6.0;

Question: What is the production code for the episode that had 9.18 million viewers (U.S.)?
SQL: SELECT MAX("Production code") FROM "1-21550897-1" WHERE "U.S. viewers (million)" = '9.18';

Question: What episode number was directed by Craig Ross, Jr.
SQL: SELECT "#" FROM "1-21550897-1" WHERE "Directed by" = 'Craig Ross, Jr.';

Question: What episode had 10.14 million viewers (U.S.)?
SQL: SELECT MIN("#") FROM "1-21550897-1" WHERE "U.S. viewers (million)" = '10.14';

Question: Who wrote the episode with the production code 519?
SQL: SELECT "Written by" FROM "1-21550897-1" WHERE "Production code" = 519.0;