CREATE TABLE table_27343 ("No." FLOAT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Original air date" TEXT, "Production code" TEXT, "U.S. Viewers  ( in millions ) " TEXT)

if the 2.09 million US viewers watched this episode, who was it written by
SELECT "Written by" FROM table_27343 WHERE "U.S. Viewers (in millions)" = '2.09'
SELECT "Written by" FROM "table_27343" WHERE "U.S. Viewers (in millions)" = '2.09'