Question: Name the original air date for 9.16 viewers
SQL: SELECT "Original air date" FROM "1-21550870-1" WHERE "U.S. viewers (million)" = '9.16';

Question: Name the total number of production code for  episode by Steve Cohen & Andrew Dettman
SQL: SELECT COUNT("Production code") FROM "1-21550870-1" WHERE "Written by" = 'Steve Cohen & Andrew Dettman';