CREATE TABLE table_3770 ("No. in series" FLOAT, "No. in season" FLOAT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Original air date" TEXT, "U.S. viewers  ( millions ) " TEXT)

What number in season had 10.18 million US viewers?
SELECT "No. in season" FROM table_3770 WHERE "U.S. viewers (millions)" = '10.18'
SELECT "No. in season" FROM "table_3770" WHERE "U.S. viewers (millions)" = '10.18'