CREATE TABLE table_22363 ("No. in series" FLOAT, "No. in season" FLOAT, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "Original air date" CLOB, "U.S. viewers  ( in millions ) " CLOB)

What is the title when u.s. viewers (millions) is 3.97?
SELECT "Title" FROM table_22363 WHERE "U.S. viewers (in millions)" = '3.97'
SELECT "Title" FROM "table_22363" WHERE "U.S. viewers (in millions)" = '3.97'