CREATE TABLE table_30063 ("No. in series" FLOAT, "No. in season" FLOAT, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "Original air date" CLOB, "Production code" CLOB, "U.S. viewers  ( million ) " CLOB)

Who wrote episode that had 1.97 million u.s. viewers?
SELECT "Written by" FROM table_30063 WHERE "U.S. viewers (million)" = '1.97'
SELECT "Written by" FROM "table_30063" WHERE "U.S. viewers (million)" = '1.97'