Question: How many millions of U.S. viewers watched the episode "Buzzkill"? 
SQL: SELECT COUNT("U.S. viewers (millions)") FROM "1-12570759-2" WHERE "Title" = '"Buzzkill"';

Question: How many episodes were watched by 12.72 million U.S. viewers?
SQL: SELECT COUNT("Written by") FROM "1-12570759-2" WHERE "U.S. viewers (millions)" = '12.72';

Question: How many millions of U.S. viewers watched the episode directed by Rob Bailey and written by Pam Veasey?
SQL: SELECT "U.S. viewers (millions)" FROM "1-12570759-2" WHERE "Directed by" = 'Rob Bailey' AND "Written by" = 'Pam Veasey';