CREATE TABLE table_26392 ("No." FLOAT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Original air date" TEXT, "Production code" TEXT, "U.S. viewers  ( million ) " TEXT)

Who were all the writers whose episodes had 0.97 million viewers?
SELECT "Written by" FROM table_26392 WHERE "U.S. viewers (million)" = '0.97'
SELECT "Written by" FROM "table_26392" WHERE "U.S. viewers (million)" = '0.97'