CREATE TABLE table_28083 ("Series #" FLOAT, "Season #" FLOAT, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "Original air date" CLOB, "Production code" CLOB, "U.S. viewers  ( million ) " CLOB)

Who wrote the episode with 3.92 million US viewers?
SELECT "Written by" FROM table_28083 WHERE "U.S. viewers (million)" = '3.92'
SELECT "Written by" FROM "table_28083" WHERE "U.S. viewers (million)" = '3.92'