CREATE TABLE table_27238 ("No." FLOAT, "#" FLOAT, "Title" CLOB, "Directed by" CLOB, "Written by" CLOB, "Original air date" CLOB, "Production code" CLOB, "U.S. viewers  ( million ) " CLOB)

What was the title of the episode directed by Jesse Warn?
SELECT "Production code" FROM table_27238 WHERE "Directed by" = 'Jesse Warn'
SELECT "Production code" FROM "table_27238" WHERE "Directed by" = 'Jesse Warn'