CREATE TABLE table_27197 ("No. in series" FLOAT, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "Original air date" CLOB, "U.S. viewers  ( millions ) " CLOB)

Who is the director when there is 11.21 million viewers?
SELECT "Directed by" FROM table_27197 WHERE "U.S. viewers (millions)" = '11.21'
SELECT "Directed by" FROM "table_27197" WHERE "U.S. viewers (millions)" = '11.21'