CREATE TABLE table_3960 ("Series #" FLOAT, "Season #" FLOAT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Original air date" TEXT, "Production code" TEXT, "U.S. viewers  ( million ) " TEXT)

What is the highest numbered episode in the series?
SELECT MAX("Series #") FROM table_3960
SELECT MAX("Series #") FROM "table_3960"