CREATE TABLE table_22360 ("No. in series" FLOAT, "No. in season" FLOAT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Original air date" TEXT, "U.S. viewers  ( in millions ) " TEXT)

What is the title of series 23?
SELECT "Title" FROM table_22360 WHERE "No. in series" = '23'
SELECT "Title" FROM "table_22360" WHERE "No. in series" = '23'