CREATE TABLE table_16881 ("No. in series" TEXT, "No. in season" TEXT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Featured character ( s ) " TEXT, "Original air date" TEXT, "U.S. viewers  ( million ) " TEXT)

List the episode whose number in the series is 111.
SELECT "No. in season" FROM table_16881 WHERE "No. in series" = '111'
SELECT "No. in season" FROM "table_16881" WHERE "No. in series" = '111'