CREATE TABLE table_21852 ("Episode" FLOAT, "Original title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Original airdate" TEXT, "Duration" TEXT, "Viewership" TEXT)

What was the title of the episode with 5.04 million viewers?
SELECT "Original title" FROM table_21852 WHERE "Viewership" = '5.04 million'
SELECT "Original title" FROM "table_21852" WHERE "Viewership" = '5.04 million'