CREATE TABLE table_13668 ("Title" TEXT, "Director" TEXT, "Writer" TEXT, "Original airdate" TEXT, "Prod. Code" TEXT)

Who directed the episode with production code 40811-005?
SELECT "Director" FROM table_13668 WHERE "Prod. Code" = '40811-005'
SELECT "Director" FROM "table_13668" WHERE "Prod. Code" = '40811-005'