Question: Who wrote "Concordia"?
SQL: SELECT "Written by" FROM "1-24938621-3" WHERE "Title" = '"Concordia"';

Question: What is the production code of the episode written by Cathryn Humphris?
SQL: SELECT "Production code" FROM "1-24938621-3" WHERE "Written by" = 'Cathryn Humphris';

Question: What is the production code of the episode that had 5.43 million viewers?
SQL: SELECT "Production code" FROM "1-24938621-3" WHERE "U.S. viewers (million)" = '5.43';

Question: What was the title of the episode directed by Jesse Warn?
SQL: SELECT "Production code" FROM "1-24938621-3" WHERE "Directed by" = 'Jesse Warn';

Question: What episode number was written by Gregg Hurwitz?
SQL: SELECT "No." FROM "1-24938621-3" WHERE "Written by" = 'Gregg Hurwitz';