CREATE TABLE table_26761 ("No. in series" FLOAT, "No. in season" FLOAT, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "U.S. viewers  ( million ) " CLOB, "Original air date" CLOB, "Production code" CLOB)

Who directed episode 53 in the series?
SELECT "Directed by" FROM table_26761 WHERE "No. in series" = '53'
SELECT "Directed by" FROM "table_26761" WHERE "No. in series" = '53'