Question: What was the air date in the U.S. for the episode that had 1.452 million Canadian viewers?
SQL: SELECT "U.S. air date" FROM "1-18424435-4" WHERE "Canadian viewers (million)" = '1.452';

Question: What number episode in the series was directed by Kelly Makin and written by Mark Ellis & Stephanie Morgenstern?
SQL: SELECT "No." FROM "1-18424435-4" WHERE "Directed by" = 'Kelly Makin' AND "Written by" = 'Mark Ellis & Stephanie Morgenstern';

Question: What is the maximum number of episodes in the series listed?
SQL: SELECT MAX("No.") FROM "1-18424435-4";

Question: What is the total number of episodes listed with a production code of 306?
SQL: SELECT COUNT("#") FROM "1-18424435-4" WHERE "Production code" = 306.0;

Question: Who directed the episode with a production code of 301?
SQL: SELECT "Directed by" FROM "1-18424435-4" WHERE "Production code" = 301.0;