CREATE TABLE table_27246 ("Series #" FLOAT, "Season #" FLOAT, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "Original air date" CLOB, "U.S. viewers  ( millions ) " CLOB)

What number in the season was the episode with 12.23 million viewers?
SELECT "Season #" FROM table_27246 WHERE "U.S. viewers (millions)" = '12.23'
SELECT "Season #" FROM "table_27246" WHERE "U.S. viewers (millions)" = '12.23'