Question: Who wrote the episodes watched by 1.816 million people in Canada?
SQL: SELECT "Written by" FROM "1-18424435-3" WHERE "Canadian viewers (million)" = '1.816';

Question: Who wrote the episodes watched by 1.575 million people in Canada?
SQL: SELECT "Written by" FROM "1-18424435-3" WHERE "Canadian viewers (million)" = '1.575';

Question: Who directed the episode aired on February 27, 2009?
SQL: SELECT "Directed by" FROM "1-18424435-3" WHERE "U.S. air date" = 'February 27, 2009';

Question: Which episodes had production code 217?
SQL: SELECT "Title" FROM "1-18424435-3" WHERE "Production code" = 217.0;