CREATE TABLE table_16244 ("No. in series" FLOAT, "No. in season" FLOAT, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "Featured character ( s ) " CLOB, "Original air date" CLOB, "U.S. viewers  ( million ) " CLOB)

Who directed the episode where u.s. viewers (million) is 12.90?
SELECT "Directed by" FROM table_16244 WHERE "U.S. viewers (million)" = '12.90'
SELECT "Directed by" FROM "table_16244" WHERE "U.S. viewers (million)" = '12.90'