CREATE TABLE table_1563 ("No. in series" CLOB, "No. in season" CLOB, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "Original air date" CLOB, "Production code" CLOB, "U.S. viewers  ( millions ) " CLOB)

Name who wrote the episode that had 7.56 million viewers
SELECT "Written by" FROM table_1563 WHERE "U.S. viewers (millions)" = '7.56'
SELECT "Written by" FROM "table_1563" WHERE "U.S. viewers (millions)" = '7.56'