Question: What day did episode number 4 air originally?
SQL: SELECT "Original air date" FROM "1-24648983-1" WHERE "№" = 4.0;

Question: Who wrote the episode with 8.61 million U.S. viewers?
SQL: SELECT "Written by" FROM "1-24648983-1" WHERE "U.S. viewers (million)" = '8.61';

Question: What date did the episode with 8.61 million U.S. viewers originally air?
SQL: SELECT "Original air date" FROM "1-24648983-1" WHERE "U.S. viewers (million)" = '8.61';

Question: What is the name of the episode that had 9.89 million U.S. viewers?
SQL: SELECT "Title" FROM "1-24648983-1" WHERE "U.S. viewers (million)" = '9.89';