CREATE TABLE table_16277 ("No. in series" FLOAT, "No. in season" FLOAT, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "Original air date" CLOB, "U.S. viewers  ( millions ) " CLOB)

Which episode was the number in the season where the number in the season is 10?
SELECT "No. in series" FROM table_16277 WHERE "No. in season" = '10'
SELECT "No. in series" FROM "table_16277" WHERE "No. in season" = '10'