CREATE TABLE table_29487 ("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)

Who was the writer for season episode 7?
SELECT "Written by" FROM table_29487 WHERE "No. in Season" = '7'
SELECT "Written by" FROM "table_29487" WHERE "No. in Season" = '7'