CREATE TABLE table_74242 ("No. in series" TEXT, "No. in season" TEXT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Original air date" TEXT, "Production code" TEXT)

the episode directed by art dielhenn was what number in the series?
SELECT "No. in series" FROM table_74242 WHERE "Directed by" = 'Art Dielhenn'
SELECT "No. in series" FROM "table_74242" WHERE "Directed by" = 'Art Dielhenn'